單項選擇題The worst atmospheric condition for dispersion of H2S is().

A.heavy rain
B.gusty winds with rain
C.nearly calm,clear nights or early morning
D.full sun with high winds


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2.單項選擇題The operating cord on an inflatable liferaft also serves as a().

A.lifeline
B.painter
C.drogue
D.marker

3.單項選擇題The most important thing to remember when launching an inflatable liferaft by hand is to().

A.open the CO2 inflation valve
B.open the raft container
C.ensure that the operating cord is secured to the vessel
D.inflate the raft on the vessel,then lower it over the side

4.單項選擇題The most important reason for taking anti-seasickness pills as soon as possible after entering a liferaft is to().

A.assist in sleeping
B.reduce appetite by decreasing nausea
C.prevent loss of body moisture by vomiting
D.prevent impaired judgement due to motion-induced deliriousness

5.單項選擇題The limit switches on a ships survival-craft winch system().

A.stop the winch just before the craft reaches the final stowage position
B.limit the amount of cable on the drum
C.limit the ascent rate
D.stop the winch in case the craft weighs too much