为监测ICU病室的环境情况,作空气培养的间隔时间是
C
暂无解析
27.1mol氦气(视为单原子分子理想气体),在温度由17℃升高到27℃的过程中保持压强不变,求气体吸收的热量、对外界做的功
Attheendoftheconference,allthe_(participate)wereaskedtofilloutaquestiolmaire
Theplantsneedsandwitha___(deep)ofatleast10to15cmtogrow.
The_(month)salaryforthepositionwillbenegotiableataround$2,000.
提高劳动职业技能是劳动者的义务