监测水温的测具应放置在地下水水面以下1.0m处,或放置在泉水、正在开采的生产井出水水流中心处,静置()后读数。
A、1h
B、30min
C、20min
D、5min
参考答案:D
首字母填空
小题1:His sister gets up at h __________past six in the morning.
小题2:Mr and Mrs Wang go to work by s __________every day.
小题3:My home is about 5 k__________ from our school.
小题4:He always gets early ,he is n______ late for work.
小题5:The classroom is too n_________ , I can’t hear you.
诊断肺动脉栓塞的金标准是()
A.X线平片
B.CT肺动脉造影
C.MRI
D.X线肺动脉造影
E.超声