The reason why Citigroup frown on insurance is that______.
A. insurance has a lower return on capital than other businesses
B. Citigroup itself do totally badly out of insurance indeed
Citigroup made a glum assessment of its behavior in insurance
D. MetLife's growth of book value will rise its return on equity
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有关手术后腹胀的处理措施，下列哪一项是错误的
A. 留置肛管排气
B. 必要时肌注阿托品0．5mg/6小时
C. 高渗液低压灌肠
D. 留置胃管持续减压
E. 有肠麻痹时适当补钾盐
术前常规禁食的时间是
A. 禁食4小时，禁水2小时
B. 禁食6小时，禁水2小时
C. 禁食8小时，禁水3小时
D. 禁食10小时，禁水3小时
E. 禁食12小时，禁水4小时
如果( )等于或者大于社会折现率，表现建设项目资源配置的经济效率达到了可以被接受的水平。
A. 费用效益率
B. 经济净现值
C. 经济内部效益率
D. 效益费用比
To______ the students' life on campus, the university has established many recreational facilities.
A. verify
B. convey
C. enrich
D. enhance
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