患者．男，40岁，痔疮手术后，遵医嘱行热水坐浴，以下操作不妥的是
A.坐浴盆需无菌
B.坐浴时间15～20分钟
C.坐浴后更换敷料
D.坐浴前需排空膀胱
E.水温调至60～70℃

单项选择题某2个月孕妇，出现失眠、健忘、舌炎等症，经实验室检查为巨幼红细胞贫血，被诊断为营养缺乏症。发生巨幼红细胞贫血的机制是

单项选择题Juicy Co is considering investing in a new industrial juicer for use on a new contract. It will cost $150,000and will last 2 years. Juicy Co pays corporation tax at 30% (as the cash flows occur) and, due to the health benefits of juicing, the machine attracts 100% tax allowable depreciation immediately. Given a cost of capital of 10%, what is the minimum value of the pre-tax contract revenue receivable in 2 years which would be required to recover the net cost of the juicer?