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【单选题】
曙红指示剂用于法扬斯法时,不能测定的离子为( )
A.
氯离子
B.
碘离子
C.
溴离子
D.
硫氰根离子
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参考答案:
举一反三
【单选题】This is______for ten of us to sit at.Please get us a larger one.
A.
too small a table
B.
a too small table
C.
a such small table
D.
such small a table
【单选题】It was about ten minutes after we arrived at a small village __________ it began to pour down.
A.
when
B.
where
C.
that
D.
how
【单选题】. It is reported that a small ship ran into a rock at sea, _____ all ten people on board.
A.
killing
B.
to kill
C.
killed
D.
kills
【单选题】The office is too small for ten teachers________
A.
to work
B.
working in
C.
to work on
D.
to work in
【单选题】The small town has been virtually unchanged in the last ten years.
A.
totally
B.
absolutely
C.
almost
D.
gently
【判断题】实行电子发票有利于保护消费者的权益。( )
A.
正确
B.
错误
【单选题】,电路中R1为10千欧,RF为20千欧,输入信号ui=2V,则输出信号uo为( )
A.
2V
B.
4V
C.
-4V
D.
6V
【单选题】______is really a burden to a small boy.
A.
Ten pounds'weight
B.
Ten pounds weight
C.
Ten pound weights
D.
Ten pound weight
【单选题】Ten dollars_______a big sum for a small child,and they will go a long way.
A.
are
B.
being
C.
have
D.
is
【简答题】认识并仔细观察9号楼的植物,判断植物茎的分枝方式、茎的特征、叶的类型、叶序等特征,拍摄这些植物的整体外形,茎的特点,枝叶等细节特征,并用自己的语言描述植物的特征。
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