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【简答题】
一台三相交流异步电动机的型号是YB-132M2-6，其符号意义是：Y表示()，132表示()为132mm，M表示()，2表示()，6表示。
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举一反三
【简答题】A．faced on B．faced with C．faced about D．faced up to
【单选题】It is the most severe situation _______ Japanese _______.
A.
that, has faced
B.
where, has faced
C.
that, have faced
D.
where, have faced
【单选题】The government________the serious problem of juvenile delinquency. [ ]
A.
faced with
B.
face
C.
was faced with
D.
was faced to
【单选题】_____ such great pressure once, she managed it finally. [ ]
A.
Facing
B.
Having faced
C.
Faced
D.
To face
【单选题】_______this problem, they don't know how to deal with it. [ ]
A.
Face
B.
Faced
C.
Facing
D.
To be faced
【单选题】甲、乙二人同时上山砍柴,甲花6小时砍了一担柴,乙砍了一段时间后觉得刀比较钝,于是下山磨了一次刀,磨刀加上山下山共花了一个小时,磨完后效率提升了50%,总共也花费了6个小时砍了同样一担柴,如果甲、乙二人磨刀之前的效率是相同的,则乙磨刀之前已经 砍 了几个小时柴?
A.
1
B.
2
C.
3
D.
4
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