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【单选题】
一定条件下，可逆反应N 2 +3H 2? 2NH 3 △H=-92.4KJ/mol，有关该反应的叙述正确的是（　　）
A.
正催化剂能加快正反应速率v 正 ，不影响v 逆 ，所以缩短了反应达平衡所需的时间
B.
将lmolN 2 和3molH 2 充分反应达到平衡时，放出的热量等于92.4kJ
C.
当c（N 2 ）：c（H 2 ）：c（NH 3 ）=1：3：2时，反应就达到平衡状态
D.
平时增大氮气的浓度，达新平时N 2 转化率减小，H 2 转化率增大
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举一反三
【单选题】正弦波振荡器是一种()的电子电路。
A.
将交流电能转换为直流电能
B.
将直流电能转换为交流电能
C.
对交流信号进行放大处理
D.
对直流信号进行放大处理
查看完整题目与答案
【简答题】A．He rides a bike or drives a van to work. B．He had fewer problems than his counterpart in the city. C．He need not work if the weather is bad. D．He has to fight against erous dogs every day.
查看完整题目与答案
【单选题】在幼儿自我控制的四个维度中,男孩女孩表现没有明显差异的是
A.
自我延迟满足
B.
自制力
C.
坚持性
D.
自觉性
查看完整题目与答案
【单选题】--- Bill, can I get you anything to drink? --- ____.
A.
You are welcome
B.
No problem
C.
I wouldn't mind a coffee
D.
Doesn’t matter
查看完整题目与答案
【多选题】在幼儿自我控制的四个维度中,男孩女孩表现有明显差异的是
A.
自我延迟满足
B.
自制力
C.
坚持性
D.
自觉性
查看完整题目与答案
【单选题】听力原文： If a contemporary Rip Van Winkle had slept for forty years and awakened today, he would have to go back to school before he could understand a daily newspaper or a magazine. Many new words have ...
A.
Because many new words have been added to English.
B.
Because he was illiterate before he went to sleep years ago.
C.
Because after the accident, he lost his memory.
D.
Because he was a Hungarian and couldn't read English.
查看完整题目与答案
【判断题】人们,在这山水中返璞归真了。这句话在课文中起到了点明中心的作用。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The actress who had been highly thought of ____ to be a great disappointment. [      ]
A.
turned up
C.
turned out C. turned in C. turned down
查看完整题目与答案
【单选题】若要在电子邮件中传送一个文件,可以利用。
A.
FTP;
B.
Telnet;
C.
WWW;
D.
电子邮件中的附件功能
查看完整题目与答案
【单选题】2019年3月30日,全球首个行政区域5G网络在上海_______建成并开始试用。
A.
虹口
B.
静安
C.
浦东
D.
嘉定
查看完整题目与答案
相关题目：
【单选题】正弦波振荡器是一种()的电子电路。
A.
将交流电能转换为直流电能
B.
将直流电能转换为交流电能
C.
对交流信号进行放大处理
D.
对直流信号进行放大处理
查看完整题目与答案
【简答题】A．He rides a bike or drives a van to work. B．He had fewer problems than his counterpart in the city. C．He need not work if the weather is bad. D．He has to fight against erous dogs every day.
查看完整题目与答案
【单选题】在幼儿自我控制的四个维度中,男孩女孩表现没有明显差异的是
A.
自我延迟满足
B.
自制力
C.
坚持性
D.
自觉性
查看完整题目与答案
【单选题】--- Bill, can I get you anything to drink? --- ____.
A.
You are welcome
B.
No problem
C.
I wouldn't mind a coffee
D.
Doesn’t matter
查看完整题目与答案
【多选题】在幼儿自我控制的四个维度中,男孩女孩表现有明显差异的是
A.
自我延迟满足
B.
自制力
C.
坚持性
D.
自觉性
查看完整题目与答案
【单选题】听力原文： If a contemporary Rip Van Winkle had slept for forty years and awakened today, he would have to go back to school before he could understand a daily newspaper or a magazine. Many new words have ...
A.
Because many new words have been added to English.
B.
Because he was illiterate before he went to sleep years ago.
C.
Because after the accident, he lost his memory.
D.
Because he was a Hungarian and couldn't read English.
查看完整题目与答案
【判断题】人们,在这山水中返璞归真了。这句话在课文中起到了点明中心的作用。
A.
正确
B.
错误
查看完整题目与答案
【单选题】The actress who had been highly thought of ____ to be a great disappointment. [      ]
A.
turned up
C.
turned out C. turned in C. turned down
查看完整题目与答案
【单选题】若要在电子邮件中传送一个文件,可以利用。
A.
FTP;
B.
Telnet;
C.
WWW;
D.
电子邮件中的附件功能
查看完整题目与答案
【单选题】2019年3月30日,全球首个行政区域5G网络在上海_______建成并开始试用。
A.
虹口
B.
静安
C.
浦东
D.
嘉定
查看完整题目与答案
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