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【判断题】
提出内伤头痛的临床特征是头痛时作。A.
正确
B.
错误
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】下面哪种调查方式的样本不是随机选取的( )
A.
分层抽样
B.
系统抽样
C.
整群抽样
D.
判断抽样 prefix="o" ns="urn:schemas-microsoft-com:office:office"? ?xml:namespace>
【简答题】A．He was not hungry. B．He had already had his breakfast. C．He was too tired. D．He wanted to sleep a little more.
【单选题】His aunt wanted to have him _______ the radio, but he had had it ________ already.
A.
repair, repair
B.
to repair, repair
C.
repaired, to repair
D.
repair, repaired
【简答题】By the time he was ten,Edison______experiments in chemistry. A．had already done B．already had done C．was already doing D．already did
【单选题】酶活力国际单位的定义是
A.
在最适条件下，每分钟催化1mmol底物反应所需的酶量
B.
在最适条件下，每分钟催化1mmol底物反应所需的酶量
C.
在37℃条件下，每分钟催化1mmol底物反应所需的酶量
D.
在实验室条件下，每秒钟催化1mmol底物反应所需的酶量
E.
在实验室规定条件下，每分钟催化1umol底物反应所需的酶量
【简答题】酶活力国际单位的定义
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