To reduce weight, plastic has taken （） of iron and steel in making boats.

[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

In Britain nowadays,__are used mainly for pleasure by people travelling in long

[单选题]An iron and steel works, with several satellite factories,_____in that city

An iron and steel works, with several satellite factories, ______ in that city n

Unfortunatel, there are many boaters on the water having great difficulty____ th

The boats were loaded _______ coal and they were taken to factories all over the

The boats were loaded ___ coal and they were taken to factories all over the cou

[主观题]The government has taken measures to reduce the total energy _consumption__(consume).

Because women often ___ their diet to control weight, they may not consume enoug

Engaging in some kind of sports activity helps reduce body fat and ______ your b