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【单选题】
影响房地产价格的环境因素不包括A.
大气环境
B.
声觉环境
C.
卫生环境
D.
治安环境
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】高效液相色谱定量分析常用 和 。
【单选题】听力原文： All the rescuers found in the mountains of the Sierra de Perija in Venezuela was the scattered wreckage of the plane and the charred corpses of its occupants. There were no survivors. The plane ...
A.
All the passengers were dead.
B.
Both of the plane's engines' got lost.
C.
The aircraft exploded arid caught fire.
D.
The black box has not been found yet.
【单选题】进行细胞分选时，为了保证分选细胞的生物学活性不受影响，一般要求分选速度至少达到多少 ( )
A.
20000个/秒
B.
10000个/秒
C.
7000个/秒
D.
5000个/秒
E.
3000个/秒
【简答题】33 Chilean miners were trapped nearly a half-mile underground after the mine accident. They had no real hope that they’d ever be found. Luckily, though, the men had Luis Urzua. They were rescued to sa...
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