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【单选题】
某基础工程由挖基槽、浇垫层、砌砖基、回填土4个施工过程组成，在5个施工段组织全等节拍流水施工，流水节拍为3d，要求砖基础砌筑2d后进行回填土，该工程的流水工期为（ ）。A.
24
B.
26
C.
28
D.
30
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【单选题】In early 2004 eight tiny sensors were dropped from a plane near a military base in California. After hitting the ground, the sensors—also known as smart dust sensors—organized themselves into a networ...
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