| {{B}}Listening to
Birdsong{{/B}} A male zebra finch(雀科呜鸟)chirps(呜)away to himself. Suddenly he notices a female bird nearby. He realizes he has an audience and immediately changes his song. Can the female tell the difference in his performance According to a new study, the female zebra finch knows. And she prefers the special trills (啭音)he creates when he sings to her. A male zebra finch changes his song when singing to a female in ways that people can barely detect. But the female finch can tell the difference. Scientists had noticed slight variations in the songs of male zebra finches based on whether they were singing alone or whether there was a female(and potential mate) nearby. With an audience,the males sped up the pace of their songs and controlled the notes they used. For this study,res A. Songs sung by zebra finches at a concert B. Songs sung by female finches for male finches C. Songs sung by male finches to other finches D. Songs sung by male finches for female finches [判断题]( )正弦电流或电压是交变电流的一种特殊情形。
A.正确 B.错误 [判断题] [判断题] iTV的月功能费需要根据客户办理的业务来决定，如客户办理包月业务或点播节目收看，产生的费用是在功能费外收取的.(标准分:1.0)
A.正确 B.错误 [单选题]( )用于地层不稳或场地受限制地段的水沟，兼起排除成层地下水或降低地下水位的作用。
A.排水槽 B.排水沟 C.涵洞 D.隧道 [单选题] 点火组件在什么阶段工作?
A.0-50% B.0-90% C.7%-55% D.7%-95% [多选题]施工单位对列入建设工程概算的安全作业环境及安全施工措施所需费用，应当用于()，不得挪作他用。
A.施工安全防护用具及设施的采购和更新 B.安全施工措施的落实 C.安全生产条件的改善 D.特殊作业人员津贴 E.办公费用 [单选题]电网装机容量在（）及以上的，为0.3赫兹.
A.300万千瓦 B.200万千瓦 C.160万千瓦 D.100万千瓦 [简答题] 年“非典”成为我国乃至全球的一大灾难，“非典”当时对人的心理和精神产生一些影响，你认为会产生什么样的影响?
[单选题]消防员隔热防护服是消防员在灭火救援靠近( )区受到强辐射热侵害时穿着的防护服(易)
A.毒害 B.腐蚀 C. 火焰 D.灾害 [单选题]地下配电站过道和楼梯处，应设逃生指示和（）等。
A.防踏空线 B.应急照明 C.防绊跤线 D.挡鼠板 E.略 F.略 [多选题]塔式起重机各机构的制动器应经常检查和调整制动瓦和制动轮的间隙，在磨擦面上， 不应有污物存在，遇有污物必须选用( )洗掉。
A.清水 B.汽油 C.稀料 D.机油 [判断题]步行上下班时，在双线区间，应面迎列车方向；通过桥梁、道口或横越线路时，应做到“一停、二看、三通过”，严禁来车时抢越。
A.正确 B.错误 [简答题]It is his nature to confer benefits, but he is ashamed to receive them; for the former is the part of a superior, the latter of an inferior. And when he has received a benefit, he is apt to confer a greater in return; for thus his creditor will become his debtor and be in the position of a recipient of his favour.
It is characteristic of the high-minded man, again never or reluctantly to ask favours, but to be ready to confer them, and to be lofty in his behaviour to those who are high in station and favoured by fortune, but affable to those of the middle ranks; for it is a difficult thing and a dignified thing to assert superiority over the former, but easy to assert it over the latter. A haughty demeanour in dealing with the great is quite consistent with good breeding, but in dealing with those of low estate is brutal, like showing off one’ s strength upon a cripple. [单选题]
卷扬机工作时,卷扬机上部不得放置( )。 A. 工具 B. 配件 C. 油液 D. 任何物件 [判断题]配电站户外高压设备部分停电进行营销现场作业，应在工作地点四周装设围栏，其出入口要围至邻近道路旁边，并设有“禁止攀登”和“止步，高压危险!”标示牌。
A.正确 B.错误 [多选题]除向本人同行账户转账外， 为个人办理非柜面转账业务， 单日累计金额超过 5 万元的， 可采用的安全支付指令验证方式包括。
A.支付密码 B.快捷支付 C.电子签名 D.数字证书 [单选题]《中华人民共和国民用航空法》第八十八条规定，单位或个人使用的无线电台与民用航空电台的关系是（ ）。
A.前者不得干扰后者 B.后者不得干扰前者 C.双方绝对不能同频 D.都接受国务院民用航空主管门的管理 [简答题]简述汽车维修市场调研。
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