The students in our school each an English dictionary.
A.have
B.has
C.had
D.are having
A
曲线y=2x2-2x在点(1,0)处的切线的斜率为( )
A.1
B.4
C.5
D.2
漂浮导管直接监测的指标包括()
A.PAP
B.RAP
C.CI
D.PAWP
E.以上都不是