降压作业时,管道内燃气压力控制在()Pa范围内
A. 100-600
B. 600-800
C. 300-500
D. 500-700
疲劳测定的标准:身体情况的变化,完成某种专门任务时的()降低,感到()
下列属于临时备用医嘱的是
A. 摄胸片
B. 流质饮食
C. 止咳糖浆10mlpotid
D. 地西泮5mgpoqn
E. 哌替啶50mgimsos
______ that this policy will be a golden opportunity for all business sectors.
AThere is no doubt
Bthere is no fact
CUndoubting
DIt has no doubt