A.slide ruleB.go-no-go gaugeC.derrick tapeD.amp probeA ……

单项选择题A design modification of an anchor chain which prevents kinking is the（）.

A.detachable link
B.stud link
C.Kenter link
D.connecting link

单项选择题A deck fitting，used to secure line or wire rope，consisting of a single body with two protruding horns is called a（）.

A.bitt
B.bollard
C.capstan
D.cleat

单项选择题A contra-guide is a type of（）.

A.bow thruster
B.cargo gear
C.steering engine
D.rudder

单项选择题A common means of connecting shots of anchor chain in the field is to use a（）.

A.sprocket
B.Kenter link
C.swivel
D.end shackle

单项选择题A chain stripper is used to（）.

A.prevent chain from clinging to the wildcat
B.clean the marine debris from the chain
C.flake chain from a boat's chain locker
D.clean chain prior to an x-ray inspection