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窗体顶端 题目: 燃烧的必要条件包括又称燃烧三要素,即可燃物、助燃物(氧化剂)和 。 选项:
A.
明火
B.
引火源
C.
氧气
D.
易燃物
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【单选题】某慢性肾衰患者,近半年来尿比重常固定在 1.008 ~ 1.012 之间,尿渗透压为 260 ~ 300mmol/L 。此种情况说明:
A.
肾小球滤过率降低
B.
肾浓缩功能降低而稀释功能正常
C.
肾浓缩与稀释功能均丧失
D.
内生肌酐清除率降低
E.
肾小管重吸收功能降低
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【简答题】Answer the questions 1.What impression does the writer try to give by say," the preacher preached a wonderful rhythmical sermon, all moans and shouts and lonely cries and dire picture of hell , and th...
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【单选题】Dialogue One Dialogue one 1. What does" a friend in need is a friend indeed” mean?
A.
This means that a friend who helps you when you really need help is a true friend.
B.
This means that a friend who is willing to be with you when you are happy is a true friend.
C.
This means that a friend who likes to lend money to you is a true friend.
D.
This means that a friend who likes to share his wonderful things with you is a true friend.
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【单选题】女性, 40 岁 . 患慢性风湿性心脏瓣膜病,除具有原发症状外,突然出现一侧下肢剧痛,动脉搏动消失,局部皮肤苍白、发凉、紫绀,应考虑是
A.
脑栓塞
B.
肢体栓塞
C.
下肢静脉炎
D.
下肢动脉堵塞
E.
肺栓塞
查看完整题目与答案
【简答题】常温下，用0.1000 mol/L NaOH溶液分别滴定20. 00 mL 0.1000 mol/L HCl溶液和20. 00 mL 0.1000 mol/L CH 3 COOH溶液，得到2条滴定曲线，如下图所示。 （1）由A、C点判断，滴定HCl溶液的曲线是_________（填“图1”或“图2”）； （2）a=________mL； （3）c(Na + ) = c(CH 3 COO - )的点...
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【简答题】Most shoplifters (商店扒手)agree that the January sales offer wonderful opportunities for the hard-working thief. With the shops so crowded and the staff so busy, it does not require any extraordinary tal...
查看完整题目与答案
【单选题】常温下，用0.1000 mol/L NaOH溶液分别滴定20.00mL 0.1000 mol/L盐酸和20.00 mL 0.1000 mol/L醋酸溶液，得到2条滴定曲线（如下图所示）以HA表示酸，下列说法正确的是（  ）
B.
滴定盐酸的曲线是图2 B、达到B、D状态时，两溶液中离子浓度均为c(Na + )=c(A - )
C.
达到B、E状态时，反应消耗的n(CH 3 COOH)＞n(HCl)
D.
当0mL＜ V(NaOH)＜20.00mL时，对应混合溶液中各离子浓度由大到小的顺序均为c(A - )＞c(Na + )＞c(H + )＞c(OH - )
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【单选题】用 0.1000mol/L HCl 滴定 0.1000mol/L NaOH 时的 pH 突跃范围是 9.7-4.3 ,用 0.01000mol/L HCl 滴定 0.01000mol/L NaOH 的突跃范围是
A.
9.7~4.3
B.
8.7~4.3
C.
8.7~5.3
D.
10.7~3.3
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【单选题】Directions: Listen to the dialogues and choose the right answers to the questions you hear. 1. What does" a friend in need is a friend indeed” mean?
A.
This means that a friend who helps you when you really need help is a true friend.
B.
This means that a friend who is willing to be with you when you are happy is a true friend.
C.
This means that a friend who likes to lend money to you is a true friend.
D.
This means that a friend who likes to share his wonderful things with you is a true friend.
查看完整题目与答案
【判断题】大部分HTML标签都可以在标签内包含一些属性,且各属性无先后顺序,属性也可以省略,省略即取默认值。
A.
正确
B.
错误
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相关题目：
【单选题】某慢性肾衰患者,近半年来尿比重常固定在 1.008 ~ 1.012 之间,尿渗透压为 260 ~ 300mmol/L 。此种情况说明:
A.
肾小球滤过率降低
B.
肾浓缩功能降低而稀释功能正常
C.
肾浓缩与稀释功能均丧失
D.
内生肌酐清除率降低
E.
肾小管重吸收功能降低
查看完整题目与答案
【简答题】Answer the questions 1.What impression does the writer try to give by say," the preacher preached a wonderful rhythmical sermon, all moans and shouts and lonely cries and dire picture of hell , and th...
查看完整题目与答案
【单选题】Dialogue One Dialogue one 1. What does" a friend in need is a friend indeed” mean?
A.
This means that a friend who helps you when you really need help is a true friend.
B.
This means that a friend who is willing to be with you when you are happy is a true friend.
C.
This means that a friend who likes to lend money to you is a true friend.
D.
This means that a friend who likes to share his wonderful things with you is a true friend.
查看完整题目与答案
【单选题】女性, 40 岁 . 患慢性风湿性心脏瓣膜病,除具有原发症状外,突然出现一侧下肢剧痛,动脉搏动消失,局部皮肤苍白、发凉、紫绀,应考虑是
A.
脑栓塞
B.
肢体栓塞
C.
下肢静脉炎
D.
下肢动脉堵塞
E.
肺栓塞
查看完整题目与答案
【简答题】常温下，用0.1000 mol/L NaOH溶液分别滴定20. 00 mL 0.1000 mol/L HCl溶液和20. 00 mL 0.1000 mol/L CH 3 COOH溶液，得到2条滴定曲线，如下图所示。 （1）由A、C点判断，滴定HCl溶液的曲线是_________（填“图1”或“图2”）； （2）a=________mL； （3）c(Na + ) = c(CH 3 COO - )的点...
查看完整题目与答案
【简答题】Most shoplifters (商店扒手)agree that the January sales offer wonderful opportunities for the hard-working thief. With the shops so crowded and the staff so busy, it does not require any extraordinary tal...
查看完整题目与答案
【单选题】常温下，用0.1000 mol/L NaOH溶液分别滴定20.00mL 0.1000 mol/L盐酸和20.00 mL 0.1000 mol/L醋酸溶液，得到2条滴定曲线（如下图所示）以HA表示酸，下列说法正确的是（  ）
B.
滴定盐酸的曲线是图2 B、达到B、D状态时，两溶液中离子浓度均为c(Na + )=c(A - )
C.
达到B、E状态时，反应消耗的n(CH 3 COOH)＞n(HCl)
D.
当0mL＜ V(NaOH)＜20.00mL时，对应混合溶液中各离子浓度由大到小的顺序均为c(A - )＞c(Na + )＞c(H + )＞c(OH - )
查看完整题目与答案
【单选题】用 0.1000mol/L HCl 滴定 0.1000mol/L NaOH 时的 pH 突跃范围是 9.7-4.3 ,用 0.01000mol/L HCl 滴定 0.01000mol/L NaOH 的突跃范围是
A.
9.7~4.3
B.
8.7~4.3
C.
8.7~5.3
D.
10.7~3.3
查看完整题目与答案
【单选题】Directions: Listen to the dialogues and choose the right answers to the questions you hear. 1. What does" a friend in need is a friend indeed” mean?
A.
This means that a friend who helps you when you really need help is a true friend.
B.
This means that a friend who is willing to be with you when you are happy is a true friend.
C.
This means that a friend who likes to lend money to you is a true friend.
D.
This means that a friend who likes to share his wonderful things with you is a true friend.
查看完整题目与答案
【判断题】大部分HTML标签都可以在标签内包含一些属性,且各属性无先后顺序,属性也可以省略,省略即取默认值。
A.
正确
B.
错误
查看完整题目与答案
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