阀门压力等级划分，Pn≤1.6MPa为低压阀，1.6MPa＜Pn≤10Mpa为中压阀，Pn＞10Mpa为高压阀。
参考答案：对
每空一词
小题1:我爷爷虽然八十多岁了，但仍然精力充沛。
Although my grandfather is over eighty, he is still _____________.
小题2:There are many ____________ of transportation for you to choose from, such as planes, trains.
小题3:If you want to get a job, you may have to go for a job ________________ first.
小题4:Thirty ______________by six is five.
小题5:Students should show _______________for teachers.
肾气丸中含有（）
A.生地黄
B.干地黄
C.地黄汁
D.鲜地黄
E.熟地黄炭
