你可能感興趣的試題

單項(xiàng)選擇題

Chain slings are suitable for heavy slender articles，such as（）.

A.timber or steel rails
B.locomotives or boilers
C.railway passenger coaches
D.motor vehicles

單項(xiàng)選擇題

Chafing gear（）.

A.reduces and prevents corrosion of standing rigging
B.prevents corrosion of running rigging
C.reduces and prevents wear caused by the rubbing of one object against another
D.protects the body against extreme cold

Connecting elements of a mooring system should be fabricated from（）.

你可能感興趣的試題

Chain slings are suitable for heavy slender articles，such as（）.

Chafing gear（）.

Chain slings are suitable for heavy slender articles，such as（）.