单项选择题
A single fitting installed in a pipeline that either blanks off the pipe or allows a full flow passage of a liquid through the pipe is referred to as a（）.
A.blind flange
B.pivot coupling
C.quick-release coupling
D.spectacle flange
点击查看答案&解析
相关考题
-
单项选择题
A set of interior steps on a ship leading up to a deck from below is known as（）.
A.a companion way
B.tween-decks
C.stairs
D.Any of the above are acceptable -
单项选择题
A measurement device for inspecting anchor chain is the（）.
A.slide rule
B.go-no-go gauge
C.derrick tape
D.amp probe -
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
