A.replaced in its proper location if weight loss is no more than 15%
B.replaced in its proper location if weight loss is no more than 25%
C.labeled empty and recharged as soon as possible
D.labeled empty and replaced in its proper location regardless of weight
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A.red-and-white octagon
B.daymark with a yellow stripe on it
C.green square
D.yellow diamond
A.cross connection line between two main fire lines
B.special wrench for the couplings in a fire hose line
C.tackle rigged to support a fire hose
D.None of the above
A.gale force winds within 12 hours
B.blizzard conditions
C.deteriorating or unsettled weather
D.heavy，wind driven rain
A.rainy weather for the next 48 hours
B.high seas
C.improving weather conditions
D.deteriorating weather conditions
A.seawater temperature
B.engine temperature
C.dry bulb and wet bulb temperatures
D.barometric pressure
最新試題
A towline should be fastened to（）.
A towing hook may be released from the（）.
A survival craft being used to pick up a person who has fallen overboard from a ship should approach the person（）.
A traffic separation zone is that part of a traffic separation scheme which（）.
A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when（）.
A tow can override its tug as a result of（）.
A tsunami is caused by a(n)（）.
A tow of 9 barges is made up three abreast by three long. The towboat is faced up to the last barge of the center string. The outer two strings of barges are the（）.
A stage should only be rigged（）.
A time diagram is a diagram of the celestial sphere as observed from above the（）.