你可能感興趣的試題

An oxygen indicator can be used to determine if there is（）.

A.sufficient oxygen in a compartment to support life
B.combustible gases present
C.hydrogen gas present
D.All of the above

單項(xiàng)選擇題

An on-load release system on a survival craft means the cable can be released（）.

A.only when the load is taken off the cable
B.only when there is a load on the cable
C.only when activated by the controls at the lowering station
D.at any time

As you hold a piece of manila line vertically in front of you，the strands run from the lower left to the upper right. Which type of line is this?（）

你可能感興趣的試題

An oxygen indicator can be used to determine if there is（）.

An on-load release system on a survival craft means the cable can be released（）.

As you hold a piece of manila line vertically in front of you，the strands run from the lower left to the upper right. Which type of line is this?（）