[单选题]在理论回热循环中，制冷剂经过回热器所产生的过热度比过冷度( )。

正确答案 ：B

大

[单选题]对于有应力集中的构件，通常可以采用降低材料( )的办法来保证构件的安全。

正确答案 ：C

许用应力

[单选题]By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine The device most commonly used is a

正确答案 ：B

pyrometer

[单选题]Which of the following statements is correct regarding an oil with a high viscosity index?

正确答案 ：C

Very little change in viscosity occurs with a significant change in temperature

[单选题]船员个人装备有几种？

正确答案 ：A

二种

查看原题 查看所有试题