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【单选题】— Did they carry out the experiment in the school lab? — No, it was in the scientific center _______ their teacher worked. [     ]
A.
that
B.
where
C.
why
D.
when
【单选题】下列各组离子化合物的晶格能变化顺序中,正确的是 ( ) 。
A.
(A)MgO > CaO > Al 2 O 3
B.
(B) LiF > NaCl > KI
C.
(C)RbBr < CsI < KCl
D.
(D) BaS > BaO > BaCl 2
【单选题】第一代移动通信系统采用的制式是()
A.
数字蜂窝
B.
模拟蜂窝
C.
数字大区
D.
模拟大区
【简答题】( )是线路端头车站,除了供乘客上、下车外,还用于列车折返、停留和临时检修。终点站一般设有停车线。
【简答题】在普通话单元音韵母中,a、o、e的专业名称依次为 、 、 。
【单选题】It was in the school ____ he had studied ____ he began the important experiment.
A.
that; where
B.
in which; which
C.
where; that
D.
where; in which
【单选题】—Where did you meet the visitor? —It was in the school _____I worked five years ago.
A.
where
B.
that
C.
which
D.
what
【单选题】It was in the school ___ he studied ten years ago ____ he gave a wonderful speech.
A.
that; that
B.
where; where
C.
that ; where
D.
where ; that
【单选题】在进行清洁生产审核时,以下哪项不是监测的项目?()
A.
原辅材料
B.
能源
C.
主副产品
D.
产品包装
【判断题】城市轨道交通正线信号机有红、黄、绿三种颜色显示。
A.
正确
B.
错误
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