What's the time ______ your watch? [ ]
A. on
B. from
C. by
D. with
答案:C
目前临床常用的血浆增量剂有()、()和()。
股道以上软横跨上、下固定绳负驰度不超过()
A.80mm
B.100mm
C.150mm
D.200mm