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多头掘进时，爆破母线要随用随挂。爆破母线必须挂在电缆、信号线下方，距离要大于()。
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Passage Standing on the bare ground—my head bathed by the blithe air and uplifted in to infinite space—all mean egotism vanishes. I become a transparent eyeball; I am nothing; I see all; the currents of the Universal Being circulate through me; I am part or particle of God. Questions:
Which work is this selection taken from？
From Henry David Thoreau s Concord jail experience came his famous essay______.
股份有限公司设立有哪两种方式？
A superb book entitled______came out of Henry David Thoreau s two year experiment at Walden Pond.
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