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【单选题】
酿造用粮食淀粉酸水解法检验的原理是氧化还原反应，下面说明不正确的是（）。A.
酒石酸钾钠铜中的二价铜是还原剂
B.
葡萄糖是还原剂
C.
次甲基兰还原型呈无色
D.
次甲基兰呈兰色时为氧化剂
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皮皮学刷刷变学霸
举一反三
【单选题】抛物线 y = ax 2 + bx + c ( a ≠0 )与 x 轴的交点是( -2 , 0 )和( 4 , 0 ),这条抛物线的对称轴是( )
A.
直线 x =1
B.
直线 x =-1
C.
直线 x =2
D.
直线 x =-2
【单选题】A ______is helpful in looking for a job,but it doesn't mean a job
A.
certificate
B.
grade
C.
record
D.
dteb
【单选题】A __ is helpful in looking for a job, but it doesn't mean a job.
A.
certificate
B.
work
C.
record
D.
debt
【单选题】But it doesn't mean they can do it any better than ____ us.
A.
the all of
B.
the rest of
C.
the some of
D.
the many of
【单选题】A is helpful in looking for a job, but it doesn't mean a job.
A.
certificate
B.
grade
C.
record
D.
debt
【单选题】A___ is helpful in looking for a good job, but it doesn't mean a job.
A.
certificate
B.
grade
C.
record
D.
debt
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