主蒸汽管道破裂事故 main steam line break accident
参考答案：
主蒸汽管道破裂造成大量蒸汽外喷的事故。
以清热解毒．凉血止痢为主要功用的方剂是( )
A．芍药汤B．白头翁汤C．败毒散D．黄连解毒汤E．犀角地黄汤
Tony can’t have received the invitation. ________, he would have attended your birthday party yesterday.
A．Therefore
B．Otherwise
C．However
D．Besides
