An advantage of aluminum pistons， when compared to cast iron pistons is （）.
B
举一反三
- 确保两个活塞伸出长。 A: Make sure that the two pistons extend equally. B: Ensure the two pistons extend evenly. C: Ensure the two pistons extend uniformly.
- A __________ changes the up-and-down motion of the pistons into spinning motion.
- Cylinder block holds pistons, the crankshaft and other parts.
- The engine may lose power or slow down during running， when this occurs， the first cause possible may be hot bearings and （） of the pistons in the cylinders.
- When roughing cast iron, the mainly cooling cutting fluid should be added with sufficient and uniform flow .
内容
- 0
For diesel engine piston cooling， lubricating oil can be supplied to the pistons by a/an （）.
- 1
The cylinders and pistons are in the upper part of the cylinder block and the crankshaft is in the lower part.
- 2
将以下段落翻译成中文：The cylinder head is bolted to the block. The manufacture casts the cylinder head in one piece from iron, from iron alloyed with other metals, or from aluminum alloy. Aluminum has the advantage of combining lightness with rather high heat conductivity.Depending on the style of engine, the cylinder head serves many functions.
- 3
A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.
- 4
Pistons may be made in （） in order to keep the weight down for balancing purposes at high speed.