单项选择题

Fire detecting systems on merchant vessels may be arranged to sense （）.

A.smoke
B.rate of temperature rise
C.ionized particles
D.all of the above

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单项选择题

A.Oil
B.Wood
C.Rags
D.Electrical wiring

单项选择题

A.main switchboard
B.engine room bilge
C.breathing compartment
D.electric fresh water transfer pump

单项选择题

A.one year from the date of issue
B.two years from the date of issue
C.three years from the date of issue
D.four years from the date of issue