题目内容

孕甾-4-烯-3,20—二酮的结构式是E.

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对于和解和整顿程序,我国《企业破产法(试行)》规定,无上级主管部门的企业,可以由企业的股东会通过决议并以董事会的名义申请对企业的整顿。整顿工作由董事会或股东会指定的人员负责。()

A. 正确
B. 错误

Which of the following is NOT caused by El Nino?

A. Droughts in Africa.
B. Tropical storms in Pacific.
C. Torrential rains along the Californian coast.
D. The American deserts.

体内代谢产物仍具活性,且作用时间较长的是E.

Photochemical smog exists mainly in big cities.

A. Y
B. N
C. NG

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