System with insulation class F are often used; for them a temperature
rise referred to thermal class B is allowed, which guarantees a ____
of safety on the insulation life.
A: equivalent
B: margin
C: adjustable
D: rated
rise referred to thermal class B is allowed, which guarantees a ____
of safety on the insulation life.
A: equivalent
B: margin
C: adjustable
D: rated
举一反三
- What’s the insulation materials between each phasor overhead<br/>lines? () A: air B: insulation cover C: insulation oil D: shield wires
- 下面C#程序正确的是()。 A: using System; <br/>class Hello <br/>{ <br/>static void<br/>Main()<br/>{<br/>Console.WriteLine("Hello, world"); <br/>} <br/>} B: using System; <br/>static void Main()<br/>{<br/>Console.WriteLine("Hello, world"); <br/>} C: using System; <br/>class Hello;<br/>static void<br/>Main();<br/>{<br/>Console.WriteLine("Hello, world");<br/>} <br/>} D: using System<br/>class Hello<br/>{ <br/>static void<br/>Main()<br/>{<br/>Console.WriteLine("Hello, world")<br/>} <br/>}
- Which of the following suits for energy-saving A: Making thermal insulation for cooling and heating pipelines B: Producing metal materials with mineral resource instead of metal scrapes C: Long distance transmission of electric power D: Using air conditioning system as much as possible
- What<br/>can not affect the insulation resistance?____. A: moisture B: dirt C: electricity D: oil<br/>deposits
- — Which<br/>_____ are you in? — I’m in Class One. () A: class B: school C: grade