At sea, we usually use（) to provide hot water.A.a heaterB.an exhaust gas boilerC.an engin

We use _____ to distill fresh water from sea water.

While sailing under normal weather and sea condition, the basic parameter which is used to

Promotions are usually used to attract low－income shoppers.A．YB．NC．NG

According to some estimates, at most for how long can we use the fossil fuel reserves？A．20

______ is used to prevent the entry of sea water to the machinery space.A.A special sealin

Why do many parents refuse to use after-school pr