题目内容
(请给出正确答案)
[主观题]
What ________ the safe working load of the derrick?A.isB.beC.areD.has
What ________ the safe working load of the derrick?
A.is
B.be
C.are
D.has
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What ________ the safe working load of the derrick?
A.is
B.be
C.are
D.has
第2题
A.The crew
B.The crew member
C.A person
D.The members
第3题
A.electrical fire
B.oil fire
C.common fires
D.all kinds of fires
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