Themostimportantreasonfortakinganti-seasicknesspillsassoonaspossibleafterenteringaliferaftisto（）.
A. assistinsleeping
B. reduceappetitebydecreasingnausea
C. preventlossofbodymoisturebyvomiting
D. preventimpairedjudgementduetomotion-induceddeliriousness
Themostimportantthingtorememberwhenlaunchinganinflatableliferaftbyhandisto（）.
A. opentheCOinflationvalve
B. opentheraftcontainer
C. ensurethattheoperatingcordissecuredtothevessel
D. inflatetheraftonthevessel，thenloweritovertheside
价高者得规则分别约束（）。
A. 竞买人
B. 拍卖人
C. 委托人
TheworstatmosphericconditionfordispersionofH2Sis（）.
A. heavyrain
B. gustywindswithrain
C. nearlycalm，clearnightsorearlymorning
D. fullsunwithhighwinds
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