举一反三
- At the top of the A-frames there is a strong cast iron frame called （）.
- On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as（）
- In addition to iron and carbon, list the other elements that may be found in a grey cast iron and describe their effect on the properties of a grey cast iron.
- Steel is not as _____ as cast iron; it does not break as easily.
- An advantage of aluminum pistons， when compared to cast iron pistons is （）.
内容
- 0
Which of the following is TRUE?____. A: If there is oxygen and fuel in an enclosed tank, there must be an explosion. B: Crankcase explosion is least likely to occur, because there is no air in crankcase. C: The droplets of lubricating oil splashing around in the crankcase is usually too large to start burning. D: The oil/air concentration in crankcase is usually too rich.
- 1
Cast iron carrier rings， （） machined grooves， are provided for all the pistons.
- 2
（） of the A-frames there is a strong cast iron frame called the scavenging air box.
- 3
If iron contains more than ____% C, the alloy is referred to a cast iron（） A: 2.11 B: 0.77 C: 4.3 D: 0
- 4
The specifier is attached to the top level to the right of the head while the complement is attached to the left.