可出现负性心尖搏动的是()。
A.心包积液
B.病毒性心肌炎
C.二尖瓣狭窄
D.高血压病
E.粘连性心包炎
参考答案:E
Taking this medicine,if________,will of course do good to his health.
A.continued
B.to continue
C.continues
D.continuing
不锈钢管能抗浓度______以下的硝酸、______的硫酸、______的铬酸、______以下氢氧化钠等介质的腐蚀。
A.95% 80%~100% 10% 70%
B.98% 95%~115% 15% 80%
C.100% 100%~120% 20% 90%