蛋白尿是指24小时尿液中尿蛋白定量超过
A.0.15gB.0.5gC.1.0gD.2.0gE.10g
参考答案:A
—Do you still write to your friends these days?
—No, but I used ______ that when I was at school. [ ]
A. do
B. did
C. done
D. to do
闸阀按()分为明杆和暗杆两类。
A.阀杆运行状况
B.安装方式
C.闸板结构
D.闸体结构