Theexternalcircumferenceofapairofmainbearingshellsisslightly()thatoftheboreofthehousingwhichreceivesthemWhatsthemeaningof“that”inthesentenceabove?
A. lessthan
B. lighterthan
C. largerthan
D. smallerthan
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气胀式救生筏充气所使用的气体应是()。
A. 有毒气体
B. 氨气
C. 二氧化碳和少部分氮气
ALLGEAR,SUCHASPILOTLADDER,ACCOMMODATIONLADDER,HOIST,ETC.,NECESSARYFORASAFETRANSFEROFTHEPILOTisknownas().
A. Riggins
B. Gears
C. Boardingarrangements
D. Fittings
TheexternalcircumferenceofapairofmainbearingshellsisslightlylargerthanthatoftheboreofthehousingwhichreceivesthemThedifferenceistermed().
A. nip
B. nap
C. gap
D. lip
救生筏应配备当筏充气时能()施放的海锚。
A. 自动布放
B. 人工布放
C. 混合布放