The cooling water temperature () over a period of 8 hours, and then shut down.
A. should be gradually increased
B. should be gradually reduced
C. should be constantly kept
D. should be varied up and dow
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简述现场井控设备整体试压时,闸板封井器的高压试验技术指标内容?
公务文书是按照(),经过特定的处理程序制成的凭证性信息记录。
高炉煤气的爆炸极限为()%。
A. 30.3–89.5
B. 30.8-89.5
C. 30.5-89.3
刺灸治疗肝郁胁痛的处方用穴()
A. 期门、日月、支沟、阳陵泉
B. 中庭、肝俞、期门、侠溪
C. 大包、京门、行间、膈俞
D. 足三里、三阴交、太冲
E. 阴郄、心俞、血海、三阴交