依据《安全生产法》的规定,生产经营单位应当按照国家有关规定将本单位重大危险源及有关安全措施应急措施报()备案。
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Desert perennials lose their leaves after the rainy season just as trees in wetter climates lose theirs in wetter climates because winter arrives, but the reasons for this features are different.
A. Right
B. Wrong
C. Not mentioned
A.thatB.whenC.becauseD.which
A. that
B. when
C. because
D. which