高层建筑、大型公共建筑和工艺要求不间断供水的工业建筑常采用( )。
A.上行下给式管网
B.下行上给式管网
C.分区供水式管网
D.环状供水式管网
参考答案:D
诊断肝性脑病最有参考价值的是
A.血气分析
B.ALT测定
C.脑电图检查
D.AFP测定
E.血氨测定
—Your father isn't a doctor, is he?
—_____. He teaches Chinese in a middle school. [ ]
A. No, he isn't
B. Yes, he is
C. Yes, he isn't
D. No, he is