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【多选题】
调和平均数( )。A.
也称作倒数平均数
B.
分为简单调和平均数和加权调和平均数
C.
加权调和平均数的公式为
D.
经常作为算术平均数的变形使用
E.
已知分配数列各组标志值及其标志总量，可用调和平均法计算平均数
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】简述去枕仰卧位、半坐卧位、端坐位、头低足高位、膝胸位的适用范围及其原因。
【单选题】拆迁安置地点,应当根据城市规划对建设地区的要求和建设工程的性质,按照有利于实施城市规划和城市旧城改造的原则确定。因此城市规划的要求决定了拆迁安置的地点。( )
A.
正确
B.
错误
【单选题】How do you think the author feels about these long-lived people?
A.
He is impressed with them.
B.
He doesn't care.
C.
He doesn't like them.
D.
He cares littl
【单选题】How long do most people wait to hold their wedding ceremony after they decide to marry?
A.
About one month.
B.
About half a year.
C.
About one year.
D.
About three months.
【简答题】简述去枕仰卧位的适用范围及机理。
【单选题】How do you think the author feels about these long-lived people?
A.
He is impressed with them.
B.
He doesn't care.
C.
He doesn't like them.
D.
He cares little about them.
【单选题】— ______ do you go to the old people's house, Tom? — Once a month. [ ]
A.
How long
B.
How far
C.
How soon
D.
How often
【简答题】简述去枕仰卧位的适用范围。
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