What is the solution to the water shortage proposed by the Lester A: Import water. B: Raise the price of water. C: Subside water heavily. D: Shift to more water-efficient technologies.

Recent studies show that employees who take vacation time are ________ than those who do not. A: efficient B: most efficient C: more efficient D: least efficient

The best irrigation water is river water, pond water and lake water A: 正确 B: 错误

What water is used in the production of injection A: pure water B: purified water C: water for injection D: sterile water for injection

According to the distribution of oil, gas and water, the water at the edge of containing edge is called (). A: External water B: Bottom water C: Edge water D: Edge bottom water

Which one is not the common source of injection water: A: surface water B: ground water C: distilled water D: oil polluted water

The related information can help you to operate the machine (efficient) ________. A: efficient B: effective C: efficiency D: efficiently

It's known to us all _______ a form of energy . A. water is B. that water is C. is water D. that water to

which water is more expensive? A: bottled water B: tap water

Efficient production occurs if a firm