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【单选题】
化学材料使用的禁忌：不要（ ）化工材料，除非按照制造厂商的说明进行。
A.
搅拌
B.
混合
C.
冷却
D.
摇动
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举一反三
【单选题】Passage 1 Together, the employer and the employees pay over a million dollars each year in state and local taxes. Together, they provide materials for about one-fourth of the automobiles produced in...
A.
he had enough working experience
B.
he did what Mr. Karson told him to do
C.
Mr. Karson was greatly impressed with his suit
D.
Mr. Karson was impressed with his willingness to work
【单选题】根据《制革、毛皮工业污染防治技术政策》，推广白湿皮工艺，采用无污染的化工材料预鞣、剖白湿皮；( )。
A.
提倡低铬高吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中不用或少用含铬复鞣剂
B.
提倡低铬中、高吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中不用或少用含铬复鞣剂
C.
提倡低铬中吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中不用或少用含铬复鞣剂
D.
提倡低铬高吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中少用含铬复鞣剂
【单选题】Passage 1 Together, the employer and the employees pay over a million dollars each year in state and local taxes. Together, they provide materials for about one-fourth of the automobiles produced in...
A.
a garage
B.
a steel company
C.
a brick manufacturer
D.
a local automobile factory
相关题目：
【单选题】Passage 1 Together, the employer and the employees pay over a million dollars each year in state and local taxes. Together, they provide materials for about one-fourth of the automobiles produced in...
A.
he had enough working experience
B.
he did what Mr. Karson told him to do
C.
Mr. Karson was greatly impressed with his suit
D.
Mr. Karson was impressed with his willingness to work
【单选题】根据《制革、毛皮工业污染防治技术政策》，推广白湿皮工艺，采用无污染的化工材料预鞣、剖白湿皮；( )。
A.
提倡低铬高吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中不用或少用含铬复鞣剂
B.
提倡低铬中、高吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中不用或少用含铬复鞣剂
C.
提倡低铬中吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中不用或少用含铬复鞣剂
D.
提倡低铬高吸收铬鞣和无铬鞣剂替代铬鞣，在复鞣过程中少用含铬复鞣剂
【单选题】Passage 1 Together, the employer and the employees pay over a million dollars each year in state and local taxes. Together, they provide materials for about one-fourth of the automobiles produced in...
A.
a garage
B.
a steel company
C.
a brick manufacturer
D.
a local automobile factory
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