在下列字符序列中，合法的标识符是() A: P12＆.a B: stud_100 C: $water.12 D: 88sum

在下列字符列中，合法的标识符是( )。 A: p12&a B: stud_100 C: water$12 D: 88sum

在下列字符列中,合法的标识符是（） A: p12&.a B: stud_100 C: water$12 D: 88sum

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

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

4．— Did you have anyone ______the trees? —Yes，l had the trees ______． A． to water ;water B． to water; watered C． water ; to be watered D． water; watered