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【单选题】
“84”消毒液在日常生活中使用广泛。该消毒液无色，有漂白作用。它的有效成分是A.
B.
C.
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】It’s only when you lost something __how much you value it.
A.
you will realize
B.
will you realize
C.
then you will realize
D.
that you will realize
【单选题】It is not how much you have but how much you enjoy what you have _______ brings you happiness.
A.
what
B.
which
C.
that
D.
when
【简答题】How much you get paid is dependent _______ how much you produce.
【单选题】How much you get paid is dependent ________ how much you produce.
A.
for
B.
with
C.
upon
D.
of
【单选题】关于酶的共价修饰,错误的是
A.
催化化学修饰的酶受激素调节
B.
催化效率比变构调节效率低
C.
磷酸化和脱磷酸化是最常见的酶促化学修饰
D.
调节过程一般不消耗能量
E.
具有级联放大效应
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