甘汞电极和Ag一AgCl电极只能作为参比电极使用。

需用保护具的病人是

A．腹痛

B．高热

C．谵妄

D．咯血

E．晕厥

医院感染漏报率应低于（）

A.5%

B.10%

C.15%

D.20%

E.25%

患者李某，72岁，咳嗽，咳痰，痰中带血5个月。胸片提示右侧肺门类圆形阴影，边缘毛糙。

此患者最可能的诊断为（）

A.肺结核

B.肺炎

C.肺不张

D.肺气肿

E.肺癌

F.肺脓肿

You ________ in person; a telephone would have been enough.

A．couldn't have come

B．needn't have come

C．shouldn't have come

D．mustn't have come

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