危急保安器充油试验的目的是保证超速保安器飞锤动作的()。
参考答案:可靠性和正确性
根据()和()进行缺陷定量时,回波高度的测量应在仪器的()以及()的状态下进行。
All of them try to use the power of the workstation()information in a more effective way.
A. presenting
B. presented
C. being presented
D. to present