Seawater may be used for drinking water _____.

.________quantities of water are being used nowada

_____ is used for cylinder and cylinder head, the salt water is used for cooling the lubri

Food packages, bottles and tins for drinks can cause ______.A．air and water pollutionB．bot

The best title for the passage may be ______.A．Use Humor EffectivelyB．Various Kinds of Hum

The donkey boiler may be given a bottom blow _____.A.to raise water levelB.only while maki

The cooling liquid used for the cylinder may be referred to as _____.A.jacket waterB.make-