题目内容

A.topicsB.ideasC.argumentsD.themes

A. topics
B. ideas
C. arguments
D. themes

查看答案
更多问题

A.approvedB.admiredC.deridedD.scolded

A. approved
B. admired
C. derided
D. scolded

A.evilB.sinC.wickednessD.bad

A. evil
B. sin
C. wickedness
D. bad

大气含尘浓度≥0.5μm的为3×105粒/L,经三级过滤器,≥0.5μm过滤效率分别为18%,55%,99.9%,则过滤后的空气含尘浓度≥0.5μm为()粒/L。

A. 111
B. 137
C. 152
D. 178

A.toppedB.coveredC.overdoneD.surpassed

A. topped
B. covered
C. overdone
D. surpassed

答案查题题库