The emergency communication set’s transmitter should not be tested except when（）by a public radio inspector.

A、the capstan B、the collector C、the panels D、the surface

A . Ammeter B . Voltmeter C . Wattmeter D . Synchroscope

A、that B、when C、if D、whether

A . one year B . two years C . four years D . five year

A . a 30 second on 30 second off alternating signal B . the continuous blast of the ships whistle for not less than 10 seconds supplemented by the continuous ringing of the general alarm bells for not less than 10 seconds C . an intermittent ringing of the general alarm for not less than ten seconds D . announced over the PA system

A . Ⅱ B . Ⅲ C . Ⅰ+Ⅲ D . Ⅰ

A . to inject cleaning additives when the bilges are extremely dirty B . when the main condenser becomes fouled, in order to provide additional cooling water circulation C . to connect the rose box to the independent bilge suction D . if the bilges become flooded and they can not be emptied by any other mea

A、injection valve B、relief valve C、discharge valve D、inlet filter

A . ring buoys are thrown overboard B . engines are stopped C . fire pumps are started D . life preservers have been issued to everyone

A . stop the flow of oil at the main deck manifold B . prevent the oil from leaving the shore facility C . prevent the oil from siphoning through the pump D . None of the above

A . a continuous ringing for 10 seconds B . one short ring followed by one long ring C . two long rings of at least 20 seconds D . a continuous ringing until the fire is extinguished

A . A self-contained breathing apparatus (SCBA) B . A boat hook and a spanner wrench C . A fire ax and/or cutting torch D . A Stokes litter basket

A . More than six short blasts and one long blast on the whistle B . Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarm C . Three short blasts of the whistle supplemented by the same signal on the general alarm D . More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm

A . fire fighting B . leakage blocking C . abandon ship D . integratio

A . turn it off for 5 minutes every half-hour B . turn it off and on at 5 minute intervals C . turn it off during daylight hours D . leave it on continuously

A . proceeding B . overloading C . collision D . flooding

A . The generator and bus transfer section B . The 450 volt, 60 cycle, 3 phase bus C . The 120 volt, 3 phase, 60 cycle bus D . The 24 volt DC bu

A. emergency lighting for occupied areas,navigation lights B. the driving motors of the emergency bilge pump,fire pumps,and steering gear C. communications systems and alarm systems D. all of the above

A.II B.III C..II+III D.I

A．Chicago B．Los Angeles C．New York D．Washington