盲板应加在有物料来源的阀门后部法兰处。
参考答案:对
I have ______ money than you, but I have _______ friends than you.
A.more, more
B.less, more
C.fewer, more
D.more , less
患者,女,59岁,平素血压高,现突然昏倒,不省人事,两手握固,牙关紧闭,左侧肢体偏瘫,宜首选()。
A.麝香
B.冰片
C.石菖蒲
D.苏合香
E.郁金