肺心病右心衰竭选用洋地黄时应()
A.速效类,常规剂量
B.速效类,常规剂量的1/3~2/3
C.缓效类,小剂量
D.缓效类,常规剂量
E.选用地高辛最适宜
参考答案:B
—Do you love teaching, Miss He?
—I fell in love with teaching in 2000. I ________ for twelve years by this summer.
A.will teach
B.would have taught
C.has been teaching
D.will have been teaching
电器安装应按已批准的()和产品技术文件进行施工。
A、文件
B、申请书
C、设计图纸
D、委托书