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【判断题】
1mol/L氢氧化钠滴定液的配制方法为取氢氧化钠适量,加水振使溶解成饱和溶液,冷却后,置聚乙烯塑料瓶中,静置数日,澄清后备用。取澄清的氢氧化钠饱和溶液5.6mL,加新沸过的冷水使成1000mL。A.
正确
B.
错误
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举一反三
【单选题】The amount of water in the pond will _________ as the dry season continues.A. entail B. publicize C. consequence D. diminish
A.
entail
B.
publicize
C.
consequence
D.
diminish
【单选题】The nunther of the students who took part in the competition____500，but only a small number of th
A.
14．The nunther of the students who took part in the competition____500，but only a small number of them chosen。 A was；were
B.
were；was C．were；were D．w；was
【单选题】The picture looks very beautiful _____ the light wall．
A.
in
B.
of
C.
over
D.
Against
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