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【多选题】对新启用的20cm雨量器专用量杯应检查其计量的准确度，方法是（）
A.
对0.1～1.0mm的量能否正确读取
B.
对0.1～0.5mm的量能否正确读取
C.
取约10mm的水量，与另一量杯量取的值相差不能超过0.1mm
D.
取约10mm的水量，与另一量杯量取的值相差不能超过0.2mm
【单选题】Forecasting the weather requires huge quantities of data, mainly collected by high-tech means such as satellites and radar, but low-tech tools are important too—especially old-fashioned rain gauges (雨...
A.
how to use the mobile-phone network to measure rainfall
B.
the equipment for measuring rainfall with the mobile-phone network
C.
the limits of using the mobile-phone network to measure rainfall
D.
the efficiency of measuring rainfall with the mobile-phone network
【单选题】Forecasting the weather requires huge quantities of data, mainly collected by high-tech means such as satellites and radar, but low-tech tools are important too—especially old-fashioned rain gauges (雨...
A.
A problem.
B.
A flaw.
C.
A theory.
D.
A benefit.
【多选题】20cm雨量器维护要点（）
A.
定期检查高度、水平和外筒是否漏水
B.
每次巡视仪器时检查外筒是否漏水
C.
每次巡视仪器时注意清除承水器、储水瓶内的昆虫、尘土、树叶等
D.
承水器的口沿要保持正圆
【单选题】Forecasting the weather requires huge quantities of data, mainly collected by high-tech means such as satellites and radar, but low-tech tools are important too—especially old-fashioned rain gauges (雨...
A.
mobile phones are rarely used in rural areas
B.
weather forecasts are not easy in big cities
C.
some areas can’t be adequately covered
D.
this technology can hardly be used m poor countries
【单选题】Forecasting the weather requires huge quantities of data, mainly collected by high-tech means such as satellites and radar, but low-tech tools are important too—especially old-fashioned rain gauges (雨...
A.
it is easy to use
B.
it offers real-time measurement
C.
it is less expensive
D.
it is more accurate