航海英语船舶救生设备名称单项选择题每日一练(2019.01.08)

单项选择题
A figure eight knot is used to（）.
A.be a stopper
B.shorten a line
C.join lines of equal size
D.keep a line from passing through a sheave
单项选择题
Cable tension for catenary calculations is taken at the（）.
A.chain locker
B.fairlead
C.anchor
D.contact point of chain with seabed
单项选择题
It is permissible to place an eye splice in wire rope used as cargo gear providing the splice is made using（）.
A.two tucks with whole strands and one tuck with one-half strand
B.three tucks with whole strands and two tucks with 1/2 the wire cut from the tucking strand
C.three tucks with whole strands
D.two tucks with whole strands and three tucks with half strands
单项选择题
The canopy of an inflatable liferaft should（）.
A.go into place as the raft is inflated
B.be put up after everyone is aboard
C.be put up only in severe weather
D.be used as a sail if the wind is blowing
单项选择题
Deck foam systems，designed to protect cargo areas on tankers built after January 1，1975，must have a supply of foam-producing material to operate the system at its designed rate of foam production for（）.
A.15 minutes without recharging
B.20 minutes without recharging
C.25 minutes without recharging
D.30 minutes without recharging