《安全生产法》要求，生产经营单位的主要负责人和安全生产管理人员必须具备与本单位所从事的生产经营活动相应的安全生产知识和（）。
A、管理能力A
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Asthenumberofparticipantshasincreasedfrom60to98,wewonderifwecanuseLectureHall'A'as'B'willbetoosmall.
We thank you for your letter of May 27 and the _____ illustrated catalogue.
Gene:ShallIopenthiswindow?
Jodie:______
____thecenterofourplanetarysystemwasconsideredasheresybythechurchintheMiddleAges.
Tom,withhisparents______toAmerica.They_____backintwoweeks.
