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【单选题】
实验室用锌粒与2mol/L硫酸溶液制取氢气，下列措施不能增大化学反应速率的是（ ）A.
向该硫酸溶液中加入等体积的水
B.
改用3mol/L硫酸溶液
C.
改用热的2mol/L硫酸溶液
D.
用锌粉代替锌粒
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反馈参考答案：
举一反三
【单选题】I promise you that the happy experiences will " outweigh " the unpleasant ones.
A.
使…过重
B.
使…失去平衡
C.
比…重要
D.
比…优越
【简答题】I
promise you that the happy experiences will o_____ the
unpleasant ones.
【简答题】根据肌肉现存肌力水平,增强肌力和肌肉耐力的方法有____、____、 ____、____。
【简答题】根据肌肉现存肌力水平,增强肌力和肌肉耐力的方法有 、 、 和 。
【单选题】— The gloves I received aren’t the color, black that I told you on line. — _________? But I promise you that we’ll look into it and send you the right color immediately.
A.
Why so
B.
How come
C.
What for
D.
Are you OK
【简答题】I promise you that I won't tell your secret to anybody, even if somebody ( ask) me about what happened that day.
【单选题】在间歇反应器中进行一级如反应时间为1小时转化率为0.8,如反应时间为2小时转化率为( ),如反应时间为0.5小时转化率为
A.
0.9、0.5
B.
0.96、0.55
C.
0.96、0.5
D.
0.9、0.55
【简答题】I promise you that I (tell, not) your secret to anybody. Even if somebody (ask) me about what happened that day, I (reveal, not) the truth to a single person.
【简答题】I promise you that the happy experiences will _ __________ the unpleasant ones.
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