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【多选题】
电子商务系统的类型有( )。
A.
独立网站电子商务系统
B.
内部协同电子商务系统
C.
外部协同电子商务统
D.
企业内部信息系统
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参考答案：
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【简答题】溴乙烷是一种难溶于水、密度约为水的密度的1.5倍、沸点为38.4℃的无色液体。实验室制取溴乙烷的反应如下： NaBr+H 2 SO 4 (浓) NaHSO 4 +HBr    CH 3 CH 2 OH+HBr →CH 3 CH 2 Br+H 2 O 已知反应物的用量：①NaBr(s) 0.3 mol，②浓硫酸36 mL（98%、密度1.84 g?cm –3 )， ③乙醇0.25 mol，④水25 ...
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【单选题】与传统电子商务相比,下列哪项 不 是移动商务的优势( )。
A.
时空的灵活性
B.
接入的稳定性
C.
应用的即时性
D.
服务的个性化
查看完整题目与答案
【单选题】If the FDI is a substitute for imports of goods or services, the effect can be to improve the _____ of the host country's balance of payments. 如果外国直接投资是商品或服务进口的替代,其效果可以是改善东道国( )子账户国际收支状况。
A.
offshore account离岸帐户
B.
currency account外汇账户
C.
market imperfections市场缺陷
D.
current account经常账户
查看完整题目与答案
【简答题】溴乙烷是一种难溶于水的无色液体，密度约为水的1.5倍，沸点为38.4 ℃。实验室制取溴乙烷的反应如下： NaBr+H 2 SO 4 NaHSO 4 +HBr CH 3 CH 2 OH+HBr CH 3 CH 2 Br+H 2 O 已知反应物的用量，NaBr(固体)0.3 mol，乙醇0.25mol，浓硫酸36 mL(98%，密度1.84 g·cm -3 )，水25 mL，其中乙醇的密度约为水的密度...
查看完整题目与答案
【单选题】FDI undertaken to serve the home market is known as: 为服务母国国内市场而进行的外国直接投资称为()
A.
outsourcing.外包
B.
FDI substitution. 外国直接投资替代
C.
offshore production.离岸产品,境外生产
D.
home market FDI.国内市场的外国直接投资
查看完整题目与答案
【判断题】不畏浮云遮望眼,自缘身在最高层。(《登飞来峰》) 宋 辛弃疾
A.
正确
B.
错误
查看完整题目与答案
【单选题】.Fifty-two miners were killed in the accident. ______ , thirty-six were missing.
A.
In addition
B.
On the other hand
C.
On this occasion
D.
In brief
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【单选题】听力原文： Right up to the 19th century. (32)Oxford and Cambridge were the only two universities in England. Royal patronage and aristocratic money confirmed them in their position, and attempts to found n...
A.
Because there were not enough students enrolled in more than one university.
B.
Because Oxford and Cambridge were the most important cities.
C.
Because only Oxford and Cambridge were supported by royal patronage.
D.
Because Parliament only supported Oxford and Cambridge.
查看完整题目与答案
【简答题】乙酸乙酯是重要的化工原料。实验室合成乙酸乙酯的装置如下图所示。 有关数据及副反应: 副反应： C 2 H 5 OH+C 2 H 5 OH C 2 H 5 OC 2 H 5 +H 2 O 请回答下列问题： （1）在大试管A中添加的试剂有6 mL乙醇、4 mL乙酸和4 mL浓硫酸,这三种试剂的添加顺序依次为 _______、_______   、_______ （2）试管B中导管接近液面未伸入液面下的...
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【简答题】A group of frogs were traveling through the woods, and two of them fell into a deep pit(坑). When the other frogs saw 小题1: a deep pit it was, they told the two frogs that they were as good as 小题2: (die...
查看完整题目与答案
相关题目：
【简答题】溴乙烷是一种难溶于水、密度约为水的密度的1.5倍、沸点为38.4℃的无色液体。实验室制取溴乙烷的反应如下： NaBr+H 2 SO 4 (浓) NaHSO 4 +HBr    CH 3 CH 2 OH+HBr →CH 3 CH 2 Br+H 2 O 已知反应物的用量：①NaBr(s) 0.3 mol，②浓硫酸36 mL（98%、密度1.84 g?cm –3 )， ③乙醇0.25 mol，④水25 ...
查看完整题目与答案
【单选题】与传统电子商务相比,下列哪项 不 是移动商务的优势( )。
A.
时空的灵活性
B.
接入的稳定性
C.
应用的即时性
D.
服务的个性化
查看完整题目与答案
【单选题】If the FDI is a substitute for imports of goods or services, the effect can be to improve the _____ of the host country's balance of payments. 如果外国直接投资是商品或服务进口的替代,其效果可以是改善东道国( )子账户国际收支状况。
A.
offshore account离岸帐户
B.
currency account外汇账户
C.
market imperfections市场缺陷
D.
current account经常账户
查看完整题目与答案
【简答题】溴乙烷是一种难溶于水的无色液体，密度约为水的1.5倍，沸点为38.4 ℃。实验室制取溴乙烷的反应如下： NaBr+H 2 SO 4 NaHSO 4 +HBr CH 3 CH 2 OH+HBr CH 3 CH 2 Br+H 2 O 已知反应物的用量，NaBr(固体)0.3 mol，乙醇0.25mol，浓硫酸36 mL(98%，密度1.84 g·cm -3 )，水25 mL，其中乙醇的密度约为水的密度...
查看完整题目与答案
【单选题】FDI undertaken to serve the home market is known as: 为服务母国国内市场而进行的外国直接投资称为()
A.
outsourcing.外包
B.
FDI substitution. 外国直接投资替代
C.
offshore production.离岸产品,境外生产
D.
home market FDI.国内市场的外国直接投资
查看完整题目与答案
【判断题】不畏浮云遮望眼,自缘身在最高层。(《登飞来峰》) 宋 辛弃疾
A.
正确
B.
错误
查看完整题目与答案
【单选题】.Fifty-two miners were killed in the accident. ______ , thirty-six were missing.
A.
In addition
B.
On the other hand
C.
On this occasion
D.
In brief
查看完整题目与答案
【单选题】听力原文： Right up to the 19th century. (32)Oxford and Cambridge were the only two universities in England. Royal patronage and aristocratic money confirmed them in their position, and attempts to found n...
A.
Because there were not enough students enrolled in more than one university.
B.
Because Oxford and Cambridge were the most important cities.
C.
Because only Oxford and Cambridge were supported by royal patronage.
D.
Because Parliament only supported Oxford and Cambridge.
查看完整题目与答案
【简答题】乙酸乙酯是重要的化工原料。实验室合成乙酸乙酯的装置如下图所示。 有关数据及副反应: 副反应： C 2 H 5 OH+C 2 H 5 OH C 2 H 5 OC 2 H 5 +H 2 O 请回答下列问题： （1）在大试管A中添加的试剂有6 mL乙醇、4 mL乙酸和4 mL浓硫酸,这三种试剂的添加顺序依次为 _______、_______   、_______ （2）试管B中导管接近液面未伸入液面下的...
查看完整题目与答案
【简答题】A group of frogs were traveling through the woods, and two of them fell into a deep pit(坑). When the other frogs saw 小题1: a deep pit it was, they told the two frogs that they were as good as 小题2: (die...
查看完整题目与答案
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