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【单选题】
以下关于催化剂的说法不正确的是( )A.
加快正反应速率的同时也加快了逆反应速率
B.
不改变化学反应的热效应。
C.
不能使平衡发生移动
D.
降低了正反应的活化能，而不改变化逆反应活化能。
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】55 对三视图中的主视图而言,下列说法错误的是________。
A.
尺寸上反映了物体的长度和高度
B.
方位上反映了物体的左右和前后
C.
通常反映了物体的主要特征
D.
主视图是物体的正面投影
【单选题】Larry had stolen some money, but the police had caught him and he had been put in prison. Now his trial was about to begin, and he felt sure that he would be found guilty and sent to prison for a long...
A.
A person who works in a court.
B.
A policeman.
C.
A judge.
D.
A group of people who decide if someone on trial is guilty or not guilty.
【单选题】George had stolen some money, but the police had caught him and he had been put in prison. Now his trial was about to begin, and he felt sure that he would be found guilty and sent to prison for a lon...
A.
prove him innocent
B.
him turns over a new leaf
C.
lighten his punishment
D.
him escapes from prison
【单选题】56 对三视图中的俯视图而言,下列说法错误的是________。
A.
尺寸上反映了物体的长度和宽度
B.
方位上反映了物体的左右和前后
C.
反映了物体的主要特征
D.
俯视图是物体的水平投影
【简答题】When he realized the police had seen him, theman______the exit as quickly as possible. A. madeup B. made for C. madeout D. made off
【单选题】George had stolen some money. The police had caught him and he had been put in prison. Now his trial was about to begin and he felt sure that he would be found guilty and sent to prison for a long tim...
A.
A person who works in a court.
B.
A police officer.
C.
A judge.
D.
A group of people who decide if someone on trial is guilty or not.
【简答题】品牌主要能产生四种效应,分别是扩散效应、 、 和 。
【单选题】George had stolen some money, but the police had caught him and he had been putin prison. Now his trial was about to begin, and he felt sure that he would be found guilty and sent to prison for a long...
A.
The jury sent Jim to prison for a long time.
B.
The jury visited Jim in prison.
C.
There were eleven people on the jury.
D.
There were twelve people on the jury.
【单选题】题: 对三视图中的俯视图而言,下列说法错误的是________。
A.
尺寸上反映了物体的长度和宽度
B.
方位上反映了物体的左右和前后
C.
反映了物体的主要特征
D.
俯视图是物体的水平投影
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