单项选择题
A.through bolts B.jack bolts C.holding down bolts D.tap bolts
The bedplate must be flexible enough to hog and sag wit...
单项选择题The bedplate must be flexible enough to hog and sag with the foundation plate () it is attached and which forms part of the ship’s structure.
A.in which B.on which C.to which D.by which
The fire drill must, as far as practicable, be conducte...
单项选择题The fire drill must, as far as practicable, be conducted if ().
A.there is a minor emergency B.there is an actual emergency C.there were a minor emergency D.there were an actual emergency
(), the second one will start automatically.A.If the fi...
单项选择题(), the second one will start automatically.
A.If the first stand-by set failed B.If the first stand-by set fails C.If the first stand-by set will fail D.If the first stand-by set doesn’t fail