造成冷却塔飘洒损失增大的原因有（）。
A、上塔水量大
B、风机运行数量多
C、收水器损坏
D、上塔水量小
参考答案：A,B,C
He______ on this paper for ten minutes but he______only about sixty words.
A．will have worked, has written
B．worked, has written
C．has been working, has written
D．will be working, works
--- ___________?
---Good idea.
A．Do you like to eat some beef
B．Why not have some rice
C．What do you want to have
D．May I take your order
