通过单机防火墙可以侦听外界对本机所采取的攻击，提醒用户采取防范措施。
井下技术状况是指封隔器工作状况、（）等。 A.蜡堵、砂堵、窜槽、套管变形。 B.窜槽、套管变形。 C.蜡堵、砂堵、套管变形。 D.蜡堵、砂堵、窜槽。
进入成长期的企业战略重点是（） 产品开发战略。 市场开发战略。 综合的竞争战略。 退出战略。
（）means a document which evidences a contract of carriage by sea and the taking over or loading of the goods by the carrier，and by which the carrier under takes to deliver the goods against surround of the document. Bill of lading。 Bill of exchange。 Mate's receipt。 Manifest。
The static suction lift of a pump is the difference in elevation between the （）. centerline of the pump and the level of the liquid in the suction well when the source of liquid is below the pump。 centerline of the pump and the suction liquid level when the source of liquid is above the pump。 centerline of the pump and the level of the discharge liquid。 liquid levels of the suction and discharge。
下列不属于社会剖析派作家的是（）
