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图形符号所表示的状态是在 、 作用下时电气设备或电气元件所处的状态。动合触点在 位置,动断触点在 位置,带零位的手动开关在 。
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【简答题】I．800℃时，向容积为2L的恒容密闭容器中充入一定量的CO和H 2 O维持恒温，发生反应CO(g)+H 2 O(g) H 2 (g)+CO 2 (g)，反应过???中测定的部分数据见下表： 反应时间/min 0 2 4 6 n(CO)/mol 1.20 0.90 0.80 n(H 2 O)/ mol 0.60 0.20 ①反应在2 min内的平均速率为v(H 2 O)＝__________；...
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【单选题】气开式气动薄膜调节阀的输入输出的关系是______。①输入增加时输出减小②输入减小时输出减小③输入增加时输出增加④输入减小时输出增加
A.
②③
B.
①③
C.
①④
D.
①②
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【单选题】在一定温度下的恒容密闭容器中，当下列哪些物理量不再发生变化时，表明下述反应：A（g）+2B（g）?C（g）+2D（g）已达到平衡状态（　　）
A.
混合气体的压强
B.
混合气体的密度
C.
各气体的物质的量
D.
气体的总物质的量
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【简答题】膳食实际摄入是否能满足运动员能量及各种营养素要求的评价时，首先要考虑到能量及各种营养素占供给量标准的百分比：一般认为，能量及各种营养素摄入量应占供给量标准的（）为合理，低于（）为不足，长期不足会导致（），影响运动能力，低于（）为缺乏，对健康和运动能力有严重影响。其次是评价烹调加工方法的合理性，食物加工的烹调方法和技术直接关系到（）的高低。食物通过加工烹调可以改善食物的（），同时有利于（）；但不合理...
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【简答题】一定条件下，在一定体积的恒容密闭容器中，CO 2 与NH 3 在一定条件下反应生成尿素 CO 2 （g）+2NH 3 （g） CO（NH 2 ） 2 （s）+H 2 O（g） 根据题意完成下列各题； （1）500℃，用尿素表示该反应的反应速率，v（尿素）= mol/min. （2）该反应的正反应△H 0（填“>”或“（3）上图2表示某温度时一些反应物与产物物质的量（n）随时间（t）变化的关系。 ①...
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【单选题】In 2018, internal auditors discovered that Fay, Inc., had debited an expense account for the $700,000 cost of a machine purchased on January 1, 2015. The machine's useful life was expected to be five ...
A.
$140,000.
B.
$280,000.
C.
$420,000.
D.
$700,000.
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【多选题】平衡膳食应满足的基本要求有
A.
供给必需的能量和营养素
B.
各种营养素间的比例均衡
C.
合理的烹调加工
D.
尽量生食以保证营养素不丢失
E.
一日三餐，热能分配比例适宜
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【多选题】The Japanese balance of payments from 1987 to 1993 is as follows. All numbers are reported in billions of U.S. dollars. The last line gives the real effective exchange rate index of the yen relative t...
A.
The Japanese trade balance, which has been constantly positive over the time period, worsened from 1987 to 1990 and improved from then on. The current account tracked the trade balance.
B.
The decrease in the current account from 1988 to 1990 led to a drop in official reserves (positive reserve account) and a weakening of the yen.
C.
Its real effective exchange rate depreciated from 135 to 114. This improvement in the terms of trade led to an increase of the Japanese trade balance in the early 1990s.
D.
In 1991 and 1992, the increased current account surplus was used to increase foreign investments by the Japanese (the capital and financial account deficit increased from 41 billion in 1990 to 117 billion in 1992).
E.
In 1993, the current account increased to 131 billion but net foreign investments accounted to only 104 billion. Hence, Japanese reserves increased by 27 billion (a negative official reserve account).
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【多选题】The Japanese balance of payments from 1994 to 1997 is as follows. All numbers are reported in billions of U.S. dollars. The last line gives the real effective exchange rate index of the yen relative t...
A.
The Japanese trade balance, which has been constantly positive over the time period, decreased dramatically from 1994 to 1996. The current account tracked the trade balance.
B.
The trade surplus was mostly used to invest abroad (negative capital and financial account).
C.
In each year, the current account surplus exceeded the capital and financial account deficit and official reserves decreased.
D.
In 1994 and 1995, the yen kept appreciating in real terms (its real effective exchange rate was 127 in 1992 and moved up to 175 in 1995). The strong yen hurt the international competitiveness of Japan and its trade balance strongly deteriorated until 1996.
E.
In each year, the current account surplus exceeded the capital and financial account deficit and official reserves increased.
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【单选题】Holman Company owns equipment with an original cost of $95,000 and an estimated salvage value of $5,000 that is being depreciated at $15,000 per year using the straight-line depreciation method, and o...
A.
Debit Depreciation Expense, $15,000; credit Equipment, $15,000.
B.
Debit Depreciation Expense, $15,000; credit Accumulated Depreciation, $15,000.
C.
Debit Depreciation Expense, $10,000; credit Accumulated Depreciation, $10,000.
D.
Debit Depreciation Expense, $10,000; credit Equipment, $10,000.
E.
Debit Equipment, $15,000; credit Accumulated Depreciation, $15,000.
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相关题目：
【简答题】I．800℃时，向容积为2L的恒容密闭容器中充入一定量的CO和H 2 O维持恒温，发生反应CO(g)+H 2 O(g) H 2 (g)+CO 2 (g)，反应过???中测定的部分数据见下表： 反应时间/min 0 2 4 6 n(CO)/mol 1.20 0.90 0.80 n(H 2 O)/ mol 0.60 0.20 ①反应在2 min内的平均速率为v(H 2 O)＝__________；...
查看完整题目与答案
【单选题】气开式气动薄膜调节阀的输入输出的关系是______。①输入增加时输出减小②输入减小时输出减小③输入增加时输出增加④输入减小时输出增加
A.
②③
B.
①③
C.
①④
D.
①②
查看完整题目与答案
【单选题】在一定温度下的恒容密闭容器中，当下列哪些物理量不再发生变化时，表明下述反应：A（g）+2B（g）?C（g）+2D（g）已达到平衡状态（　　）
A.
混合气体的压强
B.
混合气体的密度
C.
各气体的物质的量
D.
气体的总物质的量
查看完整题目与答案
【简答题】膳食实际摄入是否能满足运动员能量及各种营养素要求的评价时，首先要考虑到能量及各种营养素占供给量标准的百分比：一般认为，能量及各种营养素摄入量应占供给量标准的（）为合理，低于（）为不足，长期不足会导致（），影响运动能力，低于（）为缺乏，对健康和运动能力有严重影响。其次是评价烹调加工方法的合理性，食物加工的烹调方法和技术直接关系到（）的高低。食物通过加工烹调可以改善食物的（），同时有利于（）；但不合理...
查看完整题目与答案
【简答题】一定条件下，在一定体积的恒容密闭容器中，CO 2 与NH 3 在一定条件下反应生成尿素 CO 2 （g）+2NH 3 （g） CO（NH 2 ） 2 （s）+H 2 O（g） 根据题意完成下列各题； （1）500℃，用尿素表示该反应的反应速率，v（尿素）= mol/min. （2）该反应的正反应△H 0（填“>”或“（3）上图2表示某温度时一些反应物与产物物质的量（n）随时间（t）变化的关系。 ①...
查看完整题目与答案
【单选题】In 2018, internal auditors discovered that Fay, Inc., had debited an expense account for the $700,000 cost of a machine purchased on January 1, 2015. The machine's useful life was expected to be five ...
A.
$140,000.
B.
$280,000.
C.
$420,000.
D.
$700,000.
查看完整题目与答案
【多选题】平衡膳食应满足的基本要求有
A.
供给必需的能量和营养素
B.
各种营养素间的比例均衡
C.
合理的烹调加工
D.
尽量生食以保证营养素不丢失
E.
一日三餐，热能分配比例适宜
查看完整题目与答案
【多选题】The Japanese balance of payments from 1987 to 1993 is as follows. All numbers are reported in billions of U.S. dollars. The last line gives the real effective exchange rate index of the yen relative t...
A.
The Japanese trade balance, which has been constantly positive over the time period, worsened from 1987 to 1990 and improved from then on. The current account tracked the trade balance.
B.
The decrease in the current account from 1988 to 1990 led to a drop in official reserves (positive reserve account) and a weakening of the yen.
C.
Its real effective exchange rate depreciated from 135 to 114. This improvement in the terms of trade led to an increase of the Japanese trade balance in the early 1990s.
D.
In 1991 and 1992, the increased current account surplus was used to increase foreign investments by the Japanese (the capital and financial account deficit increased from 41 billion in 1990 to 117 billion in 1992).
E.
In 1993, the current account increased to 131 billion but net foreign investments accounted to only 104 billion. Hence, Japanese reserves increased by 27 billion (a negative official reserve account).
查看完整题目与答案
【多选题】The Japanese balance of payments from 1994 to 1997 is as follows. All numbers are reported in billions of U.S. dollars. The last line gives the real effective exchange rate index of the yen relative t...
A.
The Japanese trade balance, which has been constantly positive over the time period, decreased dramatically from 1994 to 1996. The current account tracked the trade balance.
B.
The trade surplus was mostly used to invest abroad (negative capital and financial account).
C.
In each year, the current account surplus exceeded the capital and financial account deficit and official reserves decreased.
D.
In 1994 and 1995, the yen kept appreciating in real terms (its real effective exchange rate was 127 in 1992 and moved up to 175 in 1995). The strong yen hurt the international competitiveness of Japan and its trade balance strongly deteriorated until 1996.
E.
In each year, the current account surplus exceeded the capital and financial account deficit and official reserves increased.
查看完整题目与答案
【单选题】Holman Company owns equipment with an original cost of $95,000 and an estimated salvage value of $5,000 that is being depreciated at $15,000 per year using the straight-line depreciation method, and o...
A.
Debit Depreciation Expense, $15,000; credit Equipment, $15,000.
B.
Debit Depreciation Expense, $15,000; credit Accumulated Depreciation, $15,000.
C.
Debit Depreciation Expense, $10,000; credit Accumulated Depreciation, $10,000.
D.
Debit Depreciation Expense, $10,000; credit Equipment, $10,000.
E.
Debit Equipment, $15,000; credit Accumulated Depreciation, $15,000.
查看完整题目与答案
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