B737-600飞机的皮托探头可以向ADM提供().
A.全压和静压
B.全压
C.静压
D.备用高度指示
参考答案:B
Mary has two brothers, ________ are doctors.
A.both of they
B.both of whom
C.both of them
D.whom of both
空气的质量直接影响到人民的生活,在空气质量报告中,下列不属于空气质量监检范围之内的物质是( )
A.CO2
B.可吸入颗粒
C.SO2
D.NO2