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单选题
根据《国际消防安全系统规则》,消防员装备和个人配备应储存于易于到达之处和随时可用,消防员装备和个人配备多于()套时,储存位置应尽量远离。
A
1
B
2
C
3
D
4
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考题
填空题附则V有关垃圾排放规定:在特殊区域外,一切()制品均不能排放入海;能漂浮的()、()和() ,在距最近陆地25nmile 以外可排放入海;食品废弃物和一切其他垃圾,在距最近陆地() n mile以外可排放入海,但在距最近陆地() nmile 以外()nmile以内应经()或()加工处理后,通过筛眼不大于()mm的粗筛排放入海。
考题
单选题根据Sulzer RTA柴油机的配桨特性可知,超转速限制区域是指()额定转速,超负荷区域是指允许()运行区。A
103%/8h内允许超负荷1hB
104%~108%/12h内允许超负荷1hC
103%/12h内允许超负荷1hD
104%~108%/4h内允许超负荷1h
考题
单选题The term diesel engine scavenging means()A
delivering more air into the cylinder than it would normally receive during an ordinary charging processB
forcing the products of combustion out of the cylinder with the fresh air chargeC
collecting the air charge at the cleanerD
combustion and expansion of hot gas
考题
单选题All classes of fires can be safely combated using()A
foamB
CO2C
low velocity water fogD
high velocity water fog
考题
单选题两台同型号、同容量的同步发电机并联运行时,功率分配均匀,系统无自动调频调载装置。两台柴油机调速器的调差率不同,当电网功率增加后,两机的输出功率都有增加,结果是调差率小的输出功率与调差率大的输出功率相比为()。A
调差率小的输出功率大B
调差率大的输出功率大C
两者相等D
不一定
考题
单选题Which of the following statements is correct regarding a turbocharged four-stroke/cycle diesel generator?()A
At zero load the intake manifold pressure is greater than the exhaust manifold pressureB
At full load the intake manifold pressure and exhaust manifold pressure are equalC
At full load the intake manifold pressure is less than the exhaust manifold pressureD
At full load the intake manifold pressure is greater than the exhaust manifold pressure
考题
单选题An example of an anchor which has a stock is a().A
Bruce anchorB
Dunn anchorC
Hook anchorD
Danforth anchor
考题
单选题在GS8800e数字调速系统中,调速器在某种原因损坏的情况下,主机仍能维持在原先的油门开度下运转。这些可能的损坏情况包括()。A
主机起动故障B
交流三相供应电压故障C
应急供电装置故障D
全船总电源故障
考题
单选题Low compression pressure in a diesel engine may be the result of ()A
insufficient fuel supply due to fuel pump valves sticking or leakingB
excessive mechanical clearance between the piston crown and cylinder headC
excessively worn fuel pump plungerD
excessive exhaust back pressure
考题
单选题The use of sinking and dispersing chemical agents for removal of surface oil is().A
the most common methodB
too expensive for common useC
generally safe to sea lifeD
authorized only with prior approval of the governmental On-Scene Coordinator
考题
单选题大型船舶中央空调系统取暖工况的温度控制方法是()。A
由供风温度控制空气加热器的蒸汽流量调节阀B
由回风温度控制空气加热器的蒸汽流量调节阀C
由供风温度控制空气加电热器的运行D
由回风温度控制空气电加热器的运行
考题
单选题AC C20主机遥控系统所用的专用模块包括()。 ①主机接口模块; ②总线耦合控制模块; ③转速控制模块; ④双处理器网段控制模块; ⑤主机安全模块; ⑥数字调速模块。A
②③⑥B
②③④⑤C
①③⑤⑥D
①②④⑤
考题
单选题自励发电机在起动后建立电压,是依靠发电机中的()。A
电枢反应B
剩磁C
漏磁通D
同步电抗
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