單項選擇題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


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1.單項選擇題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

2.單項選擇題（）, 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