题目内容

What is the purpose of cant frames in steel vessels? ()

A. To support the overhang of the stern
B. To provide strength to shell plating at the stern
C. To add strength to the deck beams which support the weather decks
D. To support the plating of a cylindrical tank

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The center line condition of the transmission shaft can be checked by()

A. the border flange’s excursion and flection
B. the both end shafts line’s accordance
C. the border flange’s flection and the both end shafts line’s accordance
D. the border flange’s accordance and both end shafts flection degree

法拉第电磁感应定律可以表述为:线圈中感应电动势的大小()。

A. 与穿过这一闭合回路的磁通量的变化率成正比
B. 与穿过这一闭合回路的磁通成正比
C. 与穿过这一闭合回路的磁感应强度成正比

管涌是指在渗流作用下,无黍性土中的细颗粒通过粗颗粒间的孔隙发生移动或()

A. 被水流带出的现象
B. 流砂现象
C. 土颗粒同时发生移动现象
D. 以上三种都不会

汽包能见到液位,开通循环流程,循环泵能够备用,是建立锅炉水强制循环必不可少的条件。

A. 正确
B. 错误

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