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【单选题】
以下哪种材料为不溶型薄膜衣的材料A.
羟丙基甲基纤维素
B.
乙基纤维素
C.
醋酸纤维素
D.
邻苯二甲酸羟丙基纤维素(HPMCP)
E.
丙烯酸树脂Ⅱ号
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反馈参考答案：
举一反三
【简答题】是指政府通过降低货币含金量或明文宣布的方式,降低本国货币对外的汇价。
【单选题】基因突变的特征是（）
A.
分子结构的变化肉眼或光学显微镜观察不到
B.
大多数基因突变对生物本身不利
C.
突变可能自然发生，也可人工诱变，自然突变率一般很低
D.
含A、B、C三项
【单选题】The management consultant wanted to find out ______.
A.
how hard the investment banker worked during his work hours
B.
when people spent time doing unnecessary work in their office.
C.
if people needed vocation after working hard for a certain period of time
D.
whether Americans were really working harder than they had done before
【单选题】—Is there a fog in the evening ? —There _____ be . I’ll make a phone call to find it out .
A.
must
B.
would
C.
will
D.
might
【单选题】He _________ at the gym at the moment. A. works out B.wo rked out
A.
works out
B.
wo rked out
C.
am working out
D.
is working out
【单选题】________ what would happen, none of them could find a way out. [ ]
A.
Left wondering
B.
Having left wondering
C.
Leaving to wonder
D.
Having left to wonder
【单选题】A family of five is really a heavy burden, so we all have to work hard to _____. [ ]
A.
find out
B.
work out
C.
carry out
D.
help out
【单选题】We had wanted to finish our task by noon,but it didn't quite . [ ]
A.
find out
B.
give out
C.
hand out
D.
work out
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