增加上塔水量,冷却塔飘洒损失将会()。
A.下降
B.上升
C.不变
D.无法判断
参考答案:B
—Shall we go and have a picnic at the weekend?
—__________.The weather forecasts say there might be a cold front by then.
A.Why not
B.We can wait
C.No,let’s not
D.It depends
罐头食品排气目的和作用。