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【单选题】
（ ）主管全国进出境动植物检疫工作。A.
国家动植物检疫机关
B.
口岸动植物检疫机关
C.
国务院农业行政主管部门
D.
质量监督检测机构
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皮皮学刷刷变学霸
举一反三
【简答题】How did the author get rid of the bat?
【单选题】The question that puzzled them is ____ they can get rid of the air pollution in the area.
A.
how is it that
B.
that is how
C.
what is that
D.
how it is that
【单选题】The number of workers in this factory _______ a lot this year. There were only a few workers in it two years ago.
A.
have increased
B.
has increased
C.
have risen
D.
has booked
【单选题】The question that puzzled them is ____ they can get rid of the air pollution in the area.
A.
how is it that
B.
that how
C.
what is it
D.
how it is that
【单选题】水泥是由几种矿物组成的混合物，改变熟料中矿物组成的相对含量，水泥的技术性能会随之变化，主要提高下列何种含量可以制得快硬高强水泥?
A.
硅酸三钙
B.
硅酸二钙
C.
铝酸三钙
D.
铁铝酸四钙
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