单选题：A team of scientists has

题目分类：理工类
题目类型：单选题
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题目内容：

A team of scientists has A．erected a pressure-releasing pipe in the lak
B．identified the gases at the bottom of the lak
C．built a beautiful fountain near the lake
D．removed all dangerous gases from the lake

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Scientists at Camegie Mellon University tried to find out

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The bhavior sensor and software system bilt in a phone

The bhavior sensor and software system bilt in a phoneA．could help store message

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厕浴间、厨房和有排水（或其他液体）要求的建筑地面面层与相连接各类面层的标高应（）并符合设计要求。

厕浴间、厨房和有排水（或其他液体）要求的建筑地面面层与相连接各类面层的标高应（）并符合设计要求。 A．相同 B．设标高差 C．略高 D．略低

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Within ten years scientists will probably have ___________{

Within ten years scientists will probably have ___________{A．the nucleus of a ce

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建筑物散水下设干砂或干炉渣层，其主要目的是（）。

建筑物散水下设干砂或干炉渣层，其主要目的是（）。 A．防火 B．防水 C．防冻 D．防振

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