基本尺寸是（）。
A.加工时的尺寸
B.设计时给定的尺寸
C.装配时的尺寸
D.测量时的尺寸
参考答案：B
少尿型ARF少尿期中，对患者危害最大的变化是（）。
A.水中毒
B.少尿
C.高钾血症
D.代谢性酸中毒
E.氮质血症
He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．
A．broke in
B．broke down
C．broke out
D．broke up
