题目内容

Priortoloweringthelifeboat，themostimportantitemtocheckisthe（）.

A. oars
B. sail
C. boatplug
D. lifepreservers

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A. 定费→缴费
B. 定费→核费→缴费
C. 核费→缴费
D. 定费→缴费→核费

A. firefightingoperations
B. salvageoperations
C. cargooperations
D. manoeuveringoperations

A. placeforpeopletoliedown
B. meansforriggingthesail
C. placeforrowerstobracetheirfeet
D. suitablemeansforwatertodrainbelowthefootings

A. 5
B. 6
C. 7
D. 8