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【简答题】
涤纶制的轻便可移动式帐篷 _______________
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皮皮学刷刷变学霸
举一反三
【单选题】What's the danger?
A.
The tree's falling down.
B.
The boy's falling out of the tree.
C.
The woman's shouting.
【单选题】The danger to the exporter in open account trading is that by surrending the shipping documents to the importer, he______control of the goods before he has obtained payment for them.
A.
is in
B.
loses
C.
retains
D.
gives up
【简答题】SS4改型电力机车单元制动器主要由箱体、( )、制动杠杆,闸瓦间隙调整器和闸瓦装置等组成
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