| 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 43 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 e A. to trace and locate enemy vessels B. to monitor deep-sea volcanic eruptions C. to study the movement of ocean currents D. to replace the global radio communications network [多选题]正常时柴油机油油位在标杆上的位置是在( )之间。
A.E B.F C.0 D. P [单选题]CTC系统的接车进路办理可分为按时间触发和按空间触发两种条件，（ ）不可触发。
A.两者都满足 B.满足按时间触发 C.两者都不满足 D.满足按空间触发 [判断题]电源系统的QF1和QF2是系统的1路和2路选择开关（ ）。
A.正确 B.错误 [判断题]BCU主机控制板上有BCU的数码显示管:93#转换阀本机位时显示bCU、93#转换阀补机位时显示bcu、从二机车93#转换阀本机位在万吨无线链接正常后显示b.CU。( )
A.正确 B.错误 [单选题]37、当断路器液压机构突然失压时应（）处理
A.A、启动油泵 B.B、更换油泵 C.C、修理油泵 D.D、申请停电隔离 [单选题]单位时间内电场力所作的功称为() 。
A.电压 B.电功率 C.电流 D.电量 [判断题]宽大也不是宽大无边，而是按《刑法》规定，对那些社会危害不大，能够认罪悔改的犯罪分子，实行宽大处理。( )
[多项选择]因特网可为我们提供的服务有（）。
A. 文件传输 B. 电子邮件 C. 万维网 D. 远程登录 [单选题] 搭设脚手架时,脚手架底脚扫地杆水平横杆离地面距离为20.~30.cm。()
A.正确 B.错误 [判断题]根据相关文件的规定，机场公安机关应当提前将押解计划通知公共航空运输企业航空安全保卫部门。
A.正确 B.错误 我来回答: 提交
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