单项选择题X 纠错
A.the age of the ship
B.the seaworthiness
C.the max drafts at both bow and the stern
D.the stability and calculated strength
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单项选择题
A.continue
B.stop
C.commence
D.cease
单项选择题
A.significant areas of damage or corrosion
B.pitting of plating and associated stiffening in decks
C.pitting of hull affecting seaworthiness or strength to take local loads
D.the condition of such items as ladder ways,guard-rails,pipe coverings
单项选择题
A.slip
B.sidewise force
C.rotational force
D.thrust
单项选择题
A.only after two hours in the water
B.only after four hours in the water
C.before entry into the water
D.upon entry into the water
单项选择题
A.when approved by the lockmaster
B.when locking downbound
C.at no time
D.during high water only
单项选择题
A.it increases the likelihood of collision between the towing vessel and the disabled vessel
B.recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towline
C.the monkey fist may injure someone
D.it may reduce the catenary and increase yawing
单项选择题
A.route
B.track
C.heading
D.course over the ground
单项选择题
A.course
B.track
C.heading
D.course over the ground
单项选择题
A.a difference in water pressure
B.the method of breaking up the water stream
C.the length of the applicator
D.All of the above