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问题 单项选择题

外耳道囊腺癌手术常采用的是（）

A.颞骨外侧切除术

B.乳突切除术

C.颞骨次全切除术

D.颞骨全切除术

E.乳突根治术

答案

参考答案：A

解析：外耳道囊腺癌手术常采用颞骨外侧切除术。

名词解释

可靠性管理
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单项选择题

An analyst does research about capital asset pricing model. Which of the following statements is most accurate The security market line (SML):（）

A. is a graphical representation of the capital asset pricing model that plots expected retum versus beta for any security.

B. includes all possible combinations of the risk-free asset and any risky portfolio.

C. includes all possible combinations of the risk-free asset and the market portfolio.
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