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【单选题】
基准物一般要求纯度是（）A.
98.9%以上
B.
95.0%以上
C.
90.00%以上
D.
99.95%以上
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【单选题】Joe isn't short. ______ , he is quite tall.
A.
On the contrary
B.
In any way
C.
In balance
D.
On the whole
【简答题】What bit patterns are represented by the following decimal notations? 127
【单选题】听力原文：M: I'm sorry I'm late, Cindy. W: That's all right, Joe. My house isn't that easy to find. But you know, you wouldn't have gotten lost if you had a 'smart' car. M: A smart car? What's Bat? W: I ju...
A.
$ 5
B.
$ 15
C.
$ 30
D.
$ 250
【单选题】听力原文：M: I'm sorry I'm late, Cindy. W: That's all tight, Joe. My house isn't that easy to find. But you know, you wouldn't have gotten lost if you had a 'smart' car. M: A smart car? What's that? W: I j...
A.
From a newspaper advertisement.
B.
From a magazine article.
C.
From a television program.
D.
From an automobile dealer.
【单选题】He said he would pick me up at the school gate. However, he ______ yet. [ ]
A.
didn't arrive
B.
doesn't arrive
C.
isn' t arriving
D.
hasn't arrived
【简答题】What bit patterns are represented by the following decimal notations? 46
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