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问题 单项选择题

中心静脉压正常值为()

A．3～10cmH20

B．5～12cmH20

C．8～15cmH20

D．10～20cmH20

E．15～25cmH20

答案

参考答案：B

单项选择题

An investor has the following assets: $ 5000 in bonds with an expected return of 8%. $ 10000 in equities with an expected return of 12%. $ 5000 in real estate with an expected return of 10%. What is the portfolio's expected return（）

A. 10.00%.

B. 10.75%.

C. 10.50%.
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多项选择题

围手术期颅内压的常见影响因素有（）

A.PaC02

B.Pa02

C.血压

D.输注库血

E.颅内占位
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