1151电容式差压变送器的测量膜片受压而发生位移,两边差动电容值发生变化,并被转换成4~20mB直流的输出信号
参考答案：对
“寒因寒用”的治疗法则是：
A．虚寒证用寒药
B．实寒证用寒药
C．假热证用寒药
D．假寒证用寒药
E．虚热证用寒药
The Yangtze River, China’s longest, has been affected by a severe drought, _____ the lowest level of rainfall this year since 1961．
A．with
B．for
C．beyond
D．besides
