对于同一种污水来讲,BO、CO、TO、TOC这几种指标的数值大小排列顺序为()。
A.TOD>BOD5>CODcr>TOD
B.TOD>CODcr>TOC>BOD5
C.TOD>CODcr>BOD5>TOC
D.TOC>CODcr>BOD5>TOD
A.TOD>BOD5>CODcr>TOD
B.TOD>CODcr>TOC>BOD5
C.TOD>CODcr>BOD5>TOC
D.TOC>CODcr>BOD5>TOD
第5题
A.45.4cm
B.45.1cm
C.44.8cm
D.44.5cm
第6题
A.:t/
B./bəut/
C.:/
D./bo:t/
第9题
第10题
听力原文:Mr. Jonathan is a big customer. Don't miss the boat.
(A) I'll remind him of the boat departure.
(B) I'll try my best to win his trust.
(C) I'll book a ticket for him.
(31)
A.
B.
C.
第11题
Why do learner drivers have to keep their present jobs?
A.They don' t want their present bosses to know what they' re doing.
B.They want to earn money from both jobs.
C.They cannot earn money as taxi drivers yet.
D.They look forward to further promotion.