生化需氧量测定的标准条件为,将污水在25℃(20℃)的温度下培养5日。
参考答案:错
某电容器上标有“220V 300μF”,300μF=______F=______pF.
To get a better grade, you should __________the notes again before the test.
A.go over
B.get over
C.turn over
D.take over