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【单选题】
除哪,下列哪些方法常用于药材中水分的测定A.
烘干法
B.
气相色谱法
C.
甲苯法
D.
高效液相色谱法
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反馈参考答案：
举一反三
【单选题】Every necessary means____ to protect milu deer which____ very valuable to us. As a result, the number of milu deer is increasing. [ ]
A.
are used; is
B.
is being used; is
C.
have been used; are
D.
has been used; are
【简答题】rational
【单选题】True, 10__________________________ but it's vital we find the rational ways of fishing before every ocean becomes a dead sea.
A.
some countries are beginning to deal with this problem
B.
some countries are beginning to deal with these problems
【单选题】下述那种溶剂,全部为亲水性溶剂的是( )
A.
MeOH、Me2CO、EtOH
B.
nBuOH 、 Et 2 O 、 EtOH
C.
nBuOH 、 MeOH 、 Me 2 CO 、 EtOH
D.
EtOAc 、 EtOH 、 Et 2 O
【简答题】A．logical B．sensational C．emotional D．rational
【简答题】理性预期(rational expectations)
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