Transistors are small in size and light in weight.

[问答题]Transistors are small in size and light in weight.

[问答题]Transistors are small in size and light in weight.

[单选题]To reduce the weight of the reciprocating parts, pistons of high-speed engines are made considerably shorterThis results in __________.A．less piston slap and quieter runningB．increased crankshaft bearing wearC．slightly greater piston wearD．decreased

[试题]F．eaturessuchasheight,weight,andskincolor_______fromindividualtoindividualandfromfacetoface.A．)changeB)varyC．)alterD)convert

[单选题]A lifeboat is weight tested by lowering to near the waterand loading to capacity with weight evenly distributed. Itis then lowered into the water and released. This test mustbe done at least once every（）.A . 6 monthsB . 12 monthsC . 18 monthsD . 24 m

[问答题] 术语翻译：Weight memo（）

[单选题]The cylinder contains a great weight of air and is capable of burning a great quantity of fuel at（）.A . the beginning of the compression strokeB . the beginning of the suction strokeC . the end of the working strokeD . the end of the exhaust stroke

[单选题]E．lectromagnetic EnergyWhite light seems to be a combination of all colors. The energy that comes from a source of light is not limited to the kind of energy you can see. Heat is given off by a flame or an electric light. On a cloudy day it is possib

[试题]“Thislightistoo______formetoreadby.Don’twehaveabrighterbulbsomewhere”;saidtheelderlyman.A．)mildB)dimC)minuteD)slight

[名词解释] 光反应(light reactions)