| {{B}}Passage Two Questions 29 to 31 are based on the passage you have just heard.{{/B}} |
| 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. the sophisticated technology of focusing sounds under water B. the capability of sound to travel at high speed C. the unique property of layers of ocean water in transmitting sound D. low-frequency sounds travelling across different layers of water [多选题]WiFi网络优化时，对于干扰的解决办法有（ ）
A.调整信道 B.调整天线角度 C.将AP设备远离微波炉、蓝牙音箱等干扰设备 D.将AP放到金属盒子里 [填空题]
TV PROGRAMS TODAY If you are interested in children’s programs, on which channel can you find them today [单选题]20号钢表示钢中含碳量为( )
A.0、02% B.0、2% C.2、0% [单项选择]在下列情况下，（）不属于用人单位不得解除劳动合同的内容。
A. 劳动者患病或负伤 B. 女职工在孕期、产期和哺乳期内 C. 用人单位被撤消或解散或破产的 D. 法律法规规定的其他情况 [单选题]依据南网安规，装设接地线、个人保安线时，应（ ），拆除接地线的顺序与此相反。
A.接地端、导体(线）端同时装 B.先装接导体(线）端，后装接地端 C.先装接地端，后装导体（线）端 D.只装接地端 [单选题]按触头在电路中的用途，可分为主触头和（）触头。
A.动 B.静 C.辅助 [单项选择]（）是物流作业管理的核心。
A. 运输管理 B. 仓储管理 C. 流通加工管理 D. 物流信息管理 [多选题]断路器红外检测范围包括断路器引线、线夹、灭弧室、外绝缘及二次回路检测重点为断路器（ ）
A.引线 B.线夹 C.灭弧室 D.二次回路 [单项选择]企业流程通用型方法的第一步是：（）
A. 列出可能遇到的问题和阻碍，找出相应的解决方法。 B. 列出为达成目标所必需的合作对象和外部资源。 C. 列出实现目标所需要的技能和知识。 [多选题]本案例中违章行为：紧线、撤线前，应检查（）、桩锚及（）。必要时，应加固桩锚或加设临时拉绳。
A.基础 B.档距 C.拉线 D.杆塔 我来回答: 提交
|
