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【单选题】
在下列 4 个量中,不能用来表征有限次测定数据集中趋势的是: ( 1 )算数平均值 ` x ( 2 )中位数 M ( 3 )总体平均值 μ ( 4 )真值A.
1,2
B.
3,4
C.
1,3
D.
2,4
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【简答题】看图，判断对(√)错(×)。 ( ) 1. That is cold! ( ) 2. Ouch! That's hot! ( ) 3. This is my body. ( ) 4. This is warm.
【简答题】常见的储位编码方法有三种,分别为区段方式、品项群别方式、地址式方式。( )
【单选题】unit5
A.
She should talk about the promotion with her boss.
B.
She should keep shut until a better job is available.
C.
She should quit her job to get a better one.
D.
She should urge her boss to keep the promise.
【简答题】“实”的病机是（ ）
【简答题】用所给单词的适当形式填空 1. They are my __________(brother). 2. Are __________(this) your books? 3. This is a girl __________(she) name is Meimei. 4. -Li Lei, are those your pencils? -No, __________(it) aren't. ...
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