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【单选题】
常数Km 是一个用来衡量:A.
酶被底物饱和程度的常数
B.
酶促反应速度大小的常数
C.
酶和底物亲和力大小的常数
D.
酶稳定性的常数
E.
酶变构效应的常数
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皮皮学刷刷变学霸
举一反三
【单选题】有0.5000g纯的KIO x ，将其还原成碘化物后用23.36mL 0.1000mol/L的AgNO 3 溶液恰能滴到计量点，则x应是( )。
A.
2
B.
3
C.
5
D.
7
【单选题】有 0.5000g 纯的 KIO x ,将其还原成碘化物后用 23.36mL0.1000mol/LAgNO 3 溶液恰能滴到计量点,则 x 应是
A.
2
B.
3
C.
5
D.
7
【单选题】Please find the exact definition for 'perception'.
A.
all the goods in a shop
B.
someone who looks very neat and clean
C.
a small mistake
D.
the way that you notice things with your senses of sight，hearing，etc
【单选题】有 0.5000g 纯的 KIO x ,将其还原成碘化物后用 23.36mL 0.1000mol/LAgNO 3 溶液恰能滴到计量点,则 x 应是( )(已知 M K =39 , M I =127, M O =16 )
A.
2
B.
3
C.
5
D.
7
【单选题】The author's definition suggests that all science fiction deals with____.
A.
the same topics addressed by novels and short stories
B.
the unfamiliar or unusual
C.
Karel Capek's well-known postulate
D.
the conflict between science and fiction
【单选题】The author's definition suggests that all science fiction deals with_________
A.
monsters
B.
the same topics addressed by novels and short stories
C.
the unfamiliar or unusual
D.
Karel Capek's well-known postulate
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