| It is hard to track the blue whale, the
ocean’s largest creature, which has almost been killed off by commercial whaling
and is now listed as an endangered species. Attaching radio devices to it is
difficult, and visual sightings are too unreliable to give real insight into its
behavior. So biologists were delighted early this year when with the help of the Navy they were able to track a particular blue whale for 33 days monitoring its sounds. This was possible because of the Navy’s formerly top-secret system of underwater listening devices spanning the oceans. Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential ene A. It is now partly accessible to civilian scientists. B. It has been replaced by a more advanced system. C. It became useless to the military after the cold war. D. It is indispensable in protecting endangered species. [判断题]造成10人以上30人以下死亡,或者50人以上100人以下重伤,或者5000万元以上1亿元以下直接经济损失的为较大事故。( )
A.正确 B.错误 [填空题]模块本身的内聚是模块独立性的度量因素之一。在7类内聚中，最强内聚为______。
[多项选择]执行二次工作安全措施票时，应由（）的人担任监护人
A. 责任心较强 B. 工作较细心 C. 技术水平较高 D. 有经验 [单项选择]乳牙根尖周病最主要的病源是
A. 深龋 B. 牙髓感染 C. 外力损伤 D. 药物使用不当 E. 充填材料使用不当 [多选题]中国消防救援队队歌是国家综合性消防救援队伍（ ）的体现。
A.性质 B.宗旨 C.精神 D.战斗力 [名词解释]像主点
[填空题] 载波通信单元是采用()通信方式,用于()与(),以及集中器与电表之间通信的模块。
[多选题]本系统由（）两大部分构成
A.控制中心调度员的行车监视 B.图像显示及录制 C.车站值班员客运管理监视 D.防灾监视 [多选题]重庆市道路运输驾驶员诚信考核等级分为 ( )。
A. 优良 B. 合格 C. 基本合格 D. 不合格 [填空题]But some books would cost more than I have.
But I didn’t ______ to buy some books. 我来回答: 提交
|
