【多选题】禁止在有毒有害物质超过规定标准的区域( )。
【多选题】禁止在有毒有害物质超过规定标准的区域( )。
【简答题】NCE2L91SW: Summary Writing [Ref. at page 415 in nce2, lesson 91)
【单选题】Why does the man say you waste time waiting around doing nothing?
A.
You may get to the airport too early.
B.
You may spend a lot of time travelling to the airport.
C.
You may wait for some time on the plane before taking off.
【多选题】禁止在有毒有害物质超过规定标准的区域( )。
【多选题】禁止在有毒有害物质超过规定标准的区域( )。
【单选题】Why does the author start doing excercise
B.
It is free for students.
【判断题】现金净流量是指一定期间现金流入与现金流出的差额。()