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【单选题】
小儿动脉收缩压用下列哪项公式计算A.
年龄×2+8mmHg
B.
年龄×2+80mmHg
C.
年龄×2+85mmHg
D.
年龄×2+75mmHg
E.
年龄×2+70mmHg
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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】在宾馆中,下列哪些行为不属于循环经济的范畴: ( )
A.
提供一次性产品
B.
采用节能照明设备
C.
倡导宾客在夏天将空调温度控制在26摄氏度以上
D.
垃圾分类处理
【单选题】---I haven’t got the reference book yet, but I’ll have a test on the subject next month. ---Don’t worry. You______ have it by Friday.
A.
could
B.
shall
C.
must
D.
may
【简答题】在空间任一给定点,正弦波的相位随时间的变化率为 ,而在任一给定时刻,相位随距离x的变化是 。若初位相是π/2,振幅是20且波沿正x方向前进,写出波函数的表达式、波的速率。
【单选题】--- I haven’t got the reference book yet, but I will have a test on the subject next month. --- Don’t worry. You ________ have it by Thursday.
A.
could
B.
may
C.
shall
D.
must
【单选题】— I haven’t got the reference book yet, but I’ll have a test on the subject next month. — Don’t worry. You ________ have it by Friday.
A.
could
B.
shall
C.
may
D.
must
【简答题】一般扫描电压周期应包括三个时间段，它们是：扫描正程时间、扫描（ ）时间和等待时间。
【单选题】— I haven't got the reference book yet, but I'll have a test on the subject next month. — Don't worry. You _____ have it by Friday. [ ]
A.
shall
B.
could
C.
must
D.
may
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