Piston No2 of main engine has been removed， and it will be （） by noon tomorrow.
B
举一反三
- No other automotive engine has been able to its toughness and economy.
- We are going to have a picnic if it ______ fine tomorrow. A: is B: will be C: has been
- —Do you think it will be cool tomorrow? —______. It has been too hot for a week.
- For a diesel engine， when the piston is at the （）， the clearance volume is the largest.
- A diesel engine piston ring face is in direct contact with the （）.
内容
- 0
John______away for the last two days but he should be back tomorrow. A: is B: went C: has been D: has gone
- 1
How should you warm up a diesel engine that has not been run for some time? （）
- 2
For diesel engine piston cooling， lubricating oil can be supplied to the pistons by a/an （）.
- 3
The _______ is the heart of an automboile. A: piston B: engine C: crankshaft D: valve
- 4
There has been a collision ________ a number of cars on the main road to town.