单项选择题
How are riveted lap joints made watertight?（）
A.The faying surfaces are coated with white lead (or similar product) before the rivets are set
B.A sealing weld bead of 1/8" or less pitch is run along the plate edge
C.The plate edge is split close to an adjacent plate and mechanically forced into contact with the adjacent plate
D.A properly riveted joint will be watertight; any leakage is stopped by setting up on the rivets
相关考题
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单项选择题
Hot air can hold（）.
A.less moisture than cold air
B.more moisture than cold air
C.the same amount of moisture as cold air
D.moisture independent of air temperature -
单项选择题
Horizontal subdivision decks forming watertight compartments in the columns of a semisubmersible ship increase the unit’s（）.
A.tank capacities
B.stability in the event of damage
C.towing speed
D.anchor holding ratio -
单项选择题
High pressure and low pressure alarms must be tested（）.
A.no earlier than 24 hours prior to loading
B.no later than 24 hours prior to loading
C.anytime prior to loading
D.weekly
