给液体加热,不能选用的仪器是 [ ]
A.试管
B.量筒
C.烧杯
D.蒸发皿
答案:B
上游来水CODCr(p)=14.5mg/L,Qp=8.7m3/s;污水排放源强CODCr(h)=58mg/L,Qh=1.0m3/s。如忽略排污口至起始断面间的水质变化,且起始断面的水质分布均匀,则起始断面的CODCr浓度是()。
A.14.5mg/L
B.19.0mg/L
C.25.0mg/L
D.36.3mg/L
----- When does your plane take off?
----- At 3:00 p.m. tomorrow, I’ve just called the airport to ____it.
A.argue
B.confirm
C.organize
D.intend