正确答案: C

resistance

题目：We have stayed at Shanghai port for a long timeThe fouling on the ship’s hull greatly increases her _____.

解析：C

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学习资料的答案和解析：

[单选题]The sealing rings are in four parts and pressed together around the piston rods by means of _____

coil springs

[单选题]微动磨损常发生在( )等配合件的结合面上。Ⅰ.主轴颈与主轴承;Ⅱ.键与键槽;Ⅲ，中间轴法兰;Ⅳ.齿轮与轴;Ⅴ.活塞环与环槽。

Ⅱ+Ⅲ+Ⅳ

[单选题]水的导热速度很快，通常比空气导热快：

26倍

[单选题]三角巾包扎法的优点是______。

以上都是

[单选题]keep a gangway watch

值舷梯班