题目内容

润滑油加氢装置常用高压法兰常用（）密封。

A. 缠绕垫片
B. 八角钢垫
C. 椭圆钢垫
D. 石墨增强垫

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A transfer of a bill of lading with the intention of passing the property in the goods（）the rights and liabilities under the contract of carriage.

A. transferred
B. did not transfer
C. recovered
D. did not recovered

怎样能够通过目测，判断随行电缆是否与限速器绳、选层器钢带、限位与极限开关等装置干涉，能够判断当轿厢压实在缓冲器上时，电缆是否与地面和轿厢底边框接触

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