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【判断题】
根据我国鞣料原料具体情况一般含量在5%以上,纯度50%以上才有生产价值。 ( )
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】下列化合物能发生银镜反应的是
A.
2-羟基呋喃
B.
2-呋喃甲醛
C.
2-硝基呋喃
D.
2-甲基呋喃
【单选题】下列化合物能发生银镜反应的是
A.
2-甲基呋喃
B.
2-硝基呋喃
C.
2-羟基呋喃
D.
2-呋喃甲醛
【简答题】试述就业指标和经济行情的关系。
【单选题】He suggested ______ a lecture given by Professor White on English language learning.
A.
me to attend
B.
my attending
C.
my attention
D.
me attending
【单选题】下列化合物能发生银镜反应的是
A.
CH3OCH3
B.
CH3COOH
C.
CH3CH2OH
D.
CH3CHO
【单选题】He suggested a small bu t improvement on our former plan; I real appreciate i t.
A.
civilian
B.
solemn
C.
distinct
【单选题】He explained to the class what he suggested ____ his idea ____.
A.
to make, accepted
B.
making, agreed to
C.
should make, receive
D.
make, passed
【单选题】He suggested__________ a.1ecture given by Professor Gu on English language learning.
A.
me to attend
B.
my attending
C.
my attention
D.
me attending
【单选题】下列化合物能发生银镜反应的是
A.
CH3COCH3
B.
CH3COOH
C.
CH3CH2OH
D.
CH3CHO
E.
C6H5COCH3
【单选题】I didn' t feel like ______,so he suggested______ a taxi.
A.
to walk taking
B.
walking taking
C.
to walk to take
D.
walking to take
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