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【判断题】
对于可逆放热反应而言,并非温度越高反应速率越快,而是存在最佳反应温度, 即反应速率最快时对应的温度。A.
正确
B.
错误
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举一反三
【单选题】I don’t think Jack is a man to be _____ when we are in trouble and need his help.
A.
hoped for
B.
related to
C.
expected from
D.
relied on
【单选题】---Mary! If only we had less homework today! ---_____We all need more relaxation.
A.
I don’t think so
B.
Thanks for your advice.
C.
I’m sorry to hear that.
D.
I couldn’t agree more.
【简答题】I think we need to see an investment ________ before we make an expensive mistake. A) guide B) entrepreneur C) consultant D) assessor
【简答题】所谓能耗制动,就是在电动机脱离三相交流电源后,在电动机定子绕组上立即加一个( ),利用转子感应电流与静止磁场的相互作用产生制动转矩以达到制动的目的
【单选题】I don't think Jack is a man to be ____ when we are in trouble and need his help. [ ]
A.
related to
B.
hoped for
C.
excepted from
D.
relied on
【单选题】—This is a piece of hard work. I'm afraid ten people aren't enough. —You are right. I think we need _________. [ ]
A.
every four
B.
only four
C.
four more
D.
four less
【单选题】--- ________ bread do we need for the party? --- I think we need about 20 loaves.
A.
How many
B.
What
C.
How much
D.
Which
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