词汇与结构
Before takeoff, the engines, particularly piston engines, are routinely run up at high power to check for ________ problems.
Before takeoff, the engines, particularly piston engines, are routinely run up at high power to check for ________ problems.
engine-related
举一反三
- Before takeoff, air hostesses routinely ( ) the<br/>passengers' safety on board. A: check on B: carry on C: concentrate on D: center on
- In some engines, the cylinder_____ also carries the camshaft . A: head B: block C: piston D: port
- In diesel engines， the four basic events (intake， compression， power and exhaust) are performed once in （）.
- With four-stroke engines， it takes four revolutions of the crank shaft to make （） power stroke(s).
- According to the fuel an engine burns, there are ________. A: reciprocating and rotary engines B: gasoline and diesel engines C: 4-cylinder and 6-cylinder engines D: inline and boxer engines
内容
- 0
What are there types of the engine? A: electric motors B: steam engines C: internal combustion engines
- 1
Internal-combustion engines, which power 499 out of 500 cars on the road today, would have to all but vanish. (Economist :2018-10-31)
- 2
词汇与结构 In most such aircraft, any engine failure results in a rejected takeoff as a matter of course, since even ______ the end of the runway is preferable to lifting off with insufficient power to maintain flight.
- 3
In a four-stroke engines the camshaft rotates at _____.
- 4
Before replacing a piston you should check the rings to see that all clearances and gaps are （） the permissible tolerances.