（）是建立有效的计算机病毒防御体系所需要的技术措施。
A、杀毒软件
B、补丁管理系统
C、防火墙
D、网络入侵检测
E、漏洞扫描
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| 用所给词的适当形式填空。 | |
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| Anna comes from Russia. She is 17 years old. She's going 1 with the Black family for a year. Anna comes to England because she wants to study English. She helps Mrs. Black 2 housework and goes to English 3 every Wednesday and Friday afternoon. Anna is now in London. Everything is 4 to her. She finds life is 5 from that in Moscow. Some things are nice in London, but many things are not so nice. The shops are 6 in London than those in Moscow. 7 it's very expensive to enjoy 8 in London. It's expensive to have a 9 in a restaurant or go to a cinema. Now Anna has got used to many things, but she can't get used to the 10 in England. "You English eat so much in the morning," she often says, "Fruits, porridge, eggs, tea and bread. How can you face all that food so early in the day?" 1.______ 2.______ 3.______ 4.______ 5.______ 6.______ 7.______ 8.______ 9.______ 10.______ |
煤矿生产调度室是（）。
A.组织生产、技术、安检等部门共同完成生产计划的重要机构
B.组织生产、安检、机电等部门共同完成生产计划的重要机构
C.组织生产、技术、管理等部门共同完成生产计划的重要机构
D.组织生产、机电、技术等部门共同完成生产计划的重要机构
在植树时，常在阴天或傍晚进行移植，并去掉部分枝叶，是为了（ ）
A．降低蒸腾作用
B．降低光合作用
C．减少水分吸收
D．增加水分吸收
关于控制X线影像变形的方法，正确的是
A．影像的失真受X线投影中几何条件的控制
B．被照体平行胶片时，放大变形最小
C．被照体接近中心线，影像的位置变形最小
D．X线通过被检部位，垂直胶片时，形状变形最小
E．使用倾斜中心线摄影，不会产生影像失真
35周婴儿，出生体重1.5kg，生后3天体温不升，需置暖箱，该暖箱适宜的温度是
A．33℃
B．34℃
C．35℃
D．3l℃
E．32℃