举一反三
- The( )shows you the engine speed in revolutions per minute ( rpm). A: odometer B: trip meter C: speedometer D: tachometer
- 某发动机铭牌上标注转速为3000rpm时，输出扭矩为60N.m，则此刻发动机的功率为（）KW。（rpm的意思是revolutions per minute）
- If a four-stroke/cycle diesel engine is running at 1550 RPM， the speed of the camshaft will be（）.
- The spindle speed (in revolutions per minute) can be easily specified and the spindle can be turned on in a forward or reverse direction. 翻译为：主轴转速（每分钟转数）可以很容易地指定，主轴只能正向转动。
- The engine is () at 6,000 revolutions per minute. A: turning in B: turning off C: turning over D: turning to
内容
- 0
What is the speed of the crankshaft in a four-stroke/cycle engine when the camshaft is turning at 750 rpm?（）
- 1
The default (at machine start-up) feed rate on lathes is typically measured in A: Cutting Speed B: Inches per revolution in/rev. C: Inches per Minute in/min D: Constant Surface Speed
- 2
一飞轮以每分钟1500转的转速转动，受制动50秒后静止。则从制动开始到静止飞轮转过的转数为___A flywheel rotates at a speed of 1500 revolutions per minute and stops after being braked for 50 seconds. The number of revolutions from the start of braking to the rotation of stationary flywheel is ___ A: [img=42x24]18034cb7a5a9a82.jpg[/img]0 review B: [img=51x17]18034cb7b045f58.jpg[/img]625 reviews C: [img=51x21]18034cb7bbb4c21.jpg[/img]750 reviews D: [img=54x16]18034cb7c642f4d.jpg[/img]1500 reviews
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In a two-stroke engine that uses a camshaft, each valve is opened _____ for every rotation of the crankshaft; in these engines, the camshaft rotates at the same speed as the crankshaft.In a four-stroke engine, the valves are opened only half as often; thus, _____ of the crankshaft occur for each rotation of the camshaft. A: once ... two full rotations B: twice ...two full rotations C: once ... one full rotation D: twice ... one full rotation
- 4
The order “Stop engines” means “no engine revolutions”.