循环水浓缩倍率较大，除开大补水和排污，还要及时调整（）和（）。
参考答案：加药量；加酸量
All the flags for the sports meeting to be held next week _______ by hand. It will take us four days to make them.
A．will be made
B．are making
C．will make
D．were made
精神发育迟滞可分为（）
A.边缘状态
B.轻度
C.中度
D.重度
E.极重度
