第一章Gas is a compressible fluid. 气体是一种可压缩性的流体。( )
答案:对
When the absolute pressure of the measured fluid is greater than the external atmospheric pressure, the pressure gauges used are called. 当被测流体的绝对压强大于外界大气压强时，所用的测压仪表称为。（ ）
答案:Manometer压强表
The reading of the vacuum gauge indicates the quantity that the absolute pressure of the measured fluid is lower than the atmospheric pressure, which is called. 真空表上的读数表示被测流体的绝对压强低于绝对压强的读数，称为.（ ）。
答案:Vacuum degree真空度
18660 Pa equals to _________mmHg? 18660Pa等于多少mmHg? ( )
答案:140mmHg
Pressure can be expressed by absolute pressure, gauge pressure and vacuum gauge, if the reading of vacuum gauge in the equipment is 100 mmHg, try to calculate the absolute pressure. Given that the atmospheric pressure in this area is 740mmHg, then what is the absolute pressure？压强可以表示为绝对压强、表压和真空度，某设备真空表的读数是100 mmHg ，假设当地大气压为740 mmHg，那它的绝对压强是多少？( )
答案:640 mmHg
温馨提示支付 ￥3.00 元后可查看付费内容,请先翻页预览!
