lines? ()
A: air
B: insulation cover
C: insulation oil
D: shield wires
举一反三
- What<br/>can not affect the insulation resistance?____. A: moisture B: dirt C: electricity D: oil<br/>deposits
- insulation
- In the future,houses will have ( ) insulation and more ( ) air conditioning A: normal, cool B: better , efficient
- After an earthquake, if you see sparks or broken or frayed wires, or if you smell hot insulation, you should look for______.
- insulation blanket A: 绝缘层 B: % C: @
内容
- 0
System with insulation class F are often used; for them a temperature<br/>rise referred to thermal class B is allowed, which guarantees a ____<br/>of safety on the insulation life. A: equivalent B: margin C: adjustable D: rated
- 1
The thermal conductivity of the insulation material outside the tube is 0.08W/m.K. The convection heat transfer coefficient outside the tube is 8W/m2.K. What is the critical insulation diameter of the tube? A: 20m B: 2m C: 0.2m D: 0.02m
- 2
The room’s insulation is too bad. 这句话的意思是_____。
- 3
Until we installed the new insulation, heating was the_____ largest overhead expense we had. A: solitary B: unique C: single D: exclusively
- 4
原文:Such materials are characterized by good insulation and high resistance to wear. 译文:这些材料的特点是:绝缘性好。