少尿是指24h尿量少于
A.50mlB.200mlC.400mlD.100mlE.300ml
参考答案:C
解析:24h尿量<400ml或每小时尿量<17ml,称为少尿。
____ the flight to Beijing will be delayed is ____ I'm especially worried about. [ ]
A. If; what
B. Whether; that
C. When; that
D. Whether; what
对1DB型柱塞加药泵的偏心杠杆摇臂机构检修时有哪些质量要求?