單項選擇題Which of the following components provides a direct source of seawater for the fire main system?()

A.Rose box
B.Sea chest or spool piece
C.Sluice valve
D.Fire pump stuffing box


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1.單項選擇題Fires involving combustible metals are classified as ().

A.class "A" fires
B.class "B" fires
C.class "C" fires
D.class "D" fires

3.單項選擇題Seawater may be used for drinking water ().

A.at a maximum rate of two ounces per day
B.after mixing with an equal quantity of fresh water
C.if gather during or immediately after a hard rain
D.under no circumstance

4.單項選擇題A class "D" fire would be considered as burning ().

A.wood
B.oil
C.electrical equipment
D.magnesium