正确答案: B
各种检验
题目:航行中船舶推进系统发生故障,为了准确地确定修理范围、修理项目、修理方案及其工作量,修理前必须进行()。
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学习资料的答案和解析:
[单选题]故障率λ(t)是针对到时刻t尚能正常工作的产品数而言的;().Ⅱ.密度函数f(t)是针对开始时刻的产品数而言的
Ⅰ,Ⅱ都对
[单选题]废气锅炉出口排烟温度t2不应低于露点,排气露点与()有关。Ⅰ.废气锅炉蒸汽工作压力;Ⅱ.燃油的含硫量;Ⅲ.排气中的水蒸气分压
Ⅱ+Ⅲ
[单选题]() at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.
An alarm
[单选题]A separate piston cooling system is used to limit any contamination () piston cooling glands() the piston cooling system only.
from;to
[单选题]Fresh water is used for the cooling of cylinder jackets and () of the marine diesel engine.
cylinder covers
[单选题]Poor combustion in a diesel engine can be caused by ().
low intake air temperature