【名词&注释】
二氧化碳、灭火剂(fire extinguishing agent)、灭火机(fire extinguisher)
[判断题]包扎均要求固定要可靠松紧适度。
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举一反三：
[单选题]The most crucial time for any bearing with regards to lubrication is
A. during low loads
B. after proper oil viscosity is reached
C. during starting
D. after cleaning filters
[单选题]下列说法不正确的是__________。
A. 船上常用的灭火剂都有窒熄作用。
B. 不明电源是否切断时，应采用不导电的灭火剂灭火。
C. 二氧化碳、泡沫的灭火原理主要是窒熄,也有冷却作用。
D. 泡沫、干粉、二氧化碳灭火机都适合扑灭海图资料火。
[单选题]Re-circulating the fuel when the engine is stopped can______.①keep the fuel at the correct viscosity ②cool the injector
A. ①
B. ②
C. ①②
D. neither ① nor ②
[单选题]A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the
A. pilot valve opening
B. compensating needle valve
C. compensating spring tension
D. accumulator spring tension
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