R22制冷装置,蒸发温度为0℃,冷凝温度为38℃,吸气为干饱和状态,无过冷装置。系统产冷量为16.6×104kJ,轴功率为75kW,该装置的实际制冷系数为()。
A. 5.31
B. 4.93
C. 3.27
D. 2.57
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The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday.While elderly people (1) to sleep for fewer hours than they did when they were younger, this has a(n) (2) effect on their brain’s performance and they would benefit from getting more, according to research.Sean Drummond, a psychiatrist (心理医生) at the University of California, San Diego, said that older people are more likely to suffer from broken sleep, while younger people are better at sleeping (3) straight through the night.More sleep in old age, however, is (4) with better health, and most older people would feel better and more (5) if they slept for longer periods, he said."The ability to sleep in one chunk (整块时间) overnight goes down as we age but the amount of sleep we need to (6) well does not change," Dr Drummond told the American Association for the Advancement of Science conference in San Diego."It’s (7) a myth that older people need less sleep. The more healthy an older adult is, the more they sleep like they did when they were (8) . Our data suggests that older adults would benefit from (9) to get as much sleep as they did in their 30s. That’s (10) from person to person, but the amount of sleep we had at 35 is probably the same amount as we need at 75."A.alertB.associateC.attractingD.clingE.continuingF.definitelyG.differentH.efficientlyI.formallyJ.functionK.mixedL.negativeM.sufficientN.tendO.younger (2)处应填()
国务院证券监督管理机构或者国务院授权的部门应当自受理证券发行申请文件之日起1个月内,依照法定条件和法定程序作出予以核准或者不予核准的决定。( )
A. 对
B. 错
某国有企业拟改制为公司。除5个法人股东作为发起人外,拟将企业的190名员工都作为改制后公司的股东,上述法人股东和自然人股东作为公司设立后的全部股东。根据我国公司法的规定,该企业的公司制改革应当选择的方式是( )。
A. 可将企业改制为有限责任公司,由上述法人股东和自然人股东出资并拥有股份
B. 可将企业改制为股份有限公司,由上述法人股东和自然人股东以发起方式设立
C. 企业员工不能持有公司股份,该企业如果进行公司制改革,应当通过向社会公开募集股份的方式进行
D. 经批准可以突破有限责任公司对股东人数的限制,公司形式仍然可为有限责任公司
治疗甲状腺功能亢进症心肝阴虚证,应首选
A. 甲巯咪唑加天王补心丹
B. 放射性碘治疗加天王补心丹
C. 甲巯咪唑加六味地黄丸
D. 甲巯咪唑加消瘰丸
E. 碘液加天王补心丹