An advantage of aluminum pistons， when compared to cast iron pistons is （）.
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 .