Oneofthefirstactionstobetakenbysurvivorswhentheyhaveboardedaninflatableliferaftisto（）.
A. streamtheseaanchor
B. takeananti-seasicknesspill
C. openthepressurereliefvalve
D. drinkatleastonecanofwater
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适应性原则是着装时应考虑的重要原则之一，老年人下列哪种着装不适合（）。
A. 肩、腰、下摆、三围松紧恰当
B. 穿束腰紧身的衣服
C. 可以穿开襟羊毛衫配裤子
D. 可以穿V字领短装配西裤裙等
The“urgent”priorityshouldbeusedformessages（）.
A. concerningtheSafetyofLifeatSea(SOLAS)
B. detailingimportantnavigationalwarnings
C. containinginformationconcerningthesafetyofamobileunitorperson
D. concerningon-scenecommunications
The3-cmradarascomparedtoa10-cmradarwithsimilarspecificationswill（）.
A. givebetterrangeperformanceinrain，hail，etc
B. displaysmalltargetsinamassofdenseseaclutteratagreaterrange
C. havelessseareturninchoppyroughseas
D. displayamoremaplikepresentationforinshorenavigation
Thisarrangementis（）iftheelementsaredirectlyconnectedtooneanotherandthecontrolactiontakesplacewithouthumaninvolvement.
A. amanualclosedloop
B. amanualopenedloop
C. anautomaticclosedloop
D. anautomaticopenedloop
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