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【单选题】
船舶甲板上的斜拉索具、活动吊杆、金属舱口盖和输油管路均有可靠的金属接地联接,这种接地___A.
为保护接地
B.
用干消除静电
C.
为避雷接地
D.
抗无线电干扰
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举一反三
【简答题】线型缩聚动力学理论是建立在官能团( )假定之上推导出的。
【单选题】The game was cancelled because most of the team members______a match without a standard court.
A.
objected to have
B.
objected to having
C.
were objected to have
D.
were objected that
【单选题】Why might the man join the co - up?
A.
To save money on food
B.
To buy food without additives.
C.
To do all his shopping in one place.
D.
To meet other health - conscious people.
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