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【单选题】
用于素描的铅笔一般是hb~6b之间,最软的是( )
A.
2b
B.
6b
C.
hb
D.
4b
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【简答题】简述噬菌体的生物学性状。
【单选题】【32】
A.
I'm going to work for
B.
what I'm going to work for
C.
for which I'm going to work
D.
which I'm going to work for
【单选题】Where are you going this afternoon? [     ]
A.
I'm going to buy some comic books.
B.
I'm going to the bookstore.
C.
Can I help you?
D.
I'm going to visit my aunt.
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【单选题】噬菌体的生物学性状
A.
DNA
B.
RNA
C.
DNA 和 RNA
D.
DNA 或 RNA
【多选题】药物分析方法的效能指标有:
A.
专属性
B.
准确度
C.
耐用性
D.
检测限
E.
代表性
【多选题】药物分析方法的效能指标有 ( )
A.
准确度和精密度
B.
检出限和定量限
C.
专属性和耐用性
D.
线性和范围
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