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【单选题】
在检修膨胀阀时，没有将传动杆装上，将导致制冷系统（）。A.
流量加大
B.
流量不变
C.
流量减小
D.
流量为零
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举一反三
【单选题】It is said that this taxi driver was ________ for the road accident this morning.
A.
bo be blamed
B.
to blame
C.
to have blamed
D.
to be blaming
【简答题】the Neolithic Age
【单选题】Where has John’s father been?
A.
He has been to work.
B.
He has been to the hairdresser’s.
【单选题】The greatest celestial observatory of Neolithic times, stonehenge, is (a work) of (such) (Magnitude as it) absorbed the energies of (prehistoric Britons) for three hundred years.
A.
a work
B.
such
C.
Magnitude as it
D.
prehistoric Britons
【单选题】It is said that this taxi driver was______for the road accident this morning.
A.
to be blamed
B.
to blame
C.
to have blamed
D.
to be blaming
【单选题】______ important development of the Neolithic age was not in the manufacture of stone tools but in the production of food.
A.
The most
B.
Most
C.
Most of
D.
Of the most
【单选题】By next summer John _____in this factory for thirteen years.
A.
has been working
B.
will have been working
C.
will be working
D.
has worked
【简答题】生活中用的市电电压为 V ,就是指交流电压的 是 220 V ,其最大值为 V 。
【单选题】Which of the following is the best definition of a civilization?
A.
Neolithic towns and cities
B.
Types of complex cultures
C.
An agricultural community
D.
Large population centers
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