單項(xiàng)選擇題

The C0₂ flooding system is actuated by a sequence of steps which are（）.

A.break glass，pull valve，break glass，pull cylinder control
B.sound evacuation alarm，pull handle
C.open bypass valve，break glass，pull handle
D.open stop valve，open control valve，trip alarm

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單項(xiàng)選擇題

The bypass valve on a self-contained breathing device should be opened if（）.

A.you are entering a space containing poisonous vapors
B.you are entering a space containing explosive gases
C.the regulator of the breathing apparatus malfunctions
D.the face piece of the breathing device is too tight

單項(xiàng)選擇題

The boat is stowed on the davit rather than on a cradle with which type of davit?（）

A.Crescent
B.Sheath-screw boom
C.Quadrantal
D.Radial

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The C02 flooding system is actuated by a sequence of steps which are（）.

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The bypass valve on a self-contained breathing device should be opened if（）.

The boat is stowed on the davit rather than on a cradle with which type of davit?（）

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The C0₂ flooding system is actuated by a sequence of steps which are（）.