[单选题]可靠性在船舶动力装置质量指标中占有特殊的地位,因为它是()。Ⅰ.落实其他质量指标的前提;Ⅱ.直接影响其他指标的优劣
正确答案 :C
Ⅰ,Ⅱ都对
[单选题]对于可靠性和可靠度的表述,不能采用的是()。
正确答案 :D
可靠性与可靠度都有严格的定义,任何时候都不可混同起来
[单选题]带有普通键槽的单螺旋桨轴或艉轴其检验间隔期为()。
正确答案 :C
3年
[单选题]在测量螺旋桨螺距时,不需测量的参数是()。
正确答案 :A
测量截面的桨叶厚度
[单选题]Emulsion oils and sodium nitrite are both approved additives, but () cannot be used if any pipes are galvanized or if soldered joints exist.
正确答案 :A
the latter
[单选题]Modem engines () exhaust gas driven turbo-chargers to supply pressurized fresh air for scavenging and supercharging.
正确答案 :A
make use of
[单选题]The engine is reversed by axial displacement of the camshafts In order for this to be carried out, the cams are () with inclined transition faces.
正确答案 :B
shaped
[单选题]The piston rings are manufactured with a diameter () the bore of the cylinder.
正确答案 :A
larger than
[单选题]Which factor of the following affects not only the fuels combustion but also the engine’s maintenance?()
正确答案 :C
viscosity
[单选题]Combustion knock occurring in a diesel engine can be caused by ().
正确答案 :D
prolonged ignition lag
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