消防电梯井、机房与相邻其它电梯井、机房之间,应采用耐火极限不低于2.00h的隔墙隔开,当在隔墙上开门时,应设()
A、乙级防火门
B、甲级防火门
C、丙级防火门
参考答案:B
—What's that?
—_____.
A. No, it isn't
B. Fine, thanks
C. It's a pencil
D. Yes, it is
普萘洛尔的禁忌证是()
A.窦性心动过速
B.高血压
C.心绞痛
D.甲状腺功能亢进
E.支气管哮喘