{{B}}Single-parent
Kids Do Best{{/B}} Single mums are better at raising their kids than two parents - at least in the bird world. Mother zebra finches have to work harder and raise fewer chicks on their own, but they also produce more attractive sons who are more likely to get a mate. The finding shows that family conflict is as important an evolutionary driving force as ecological factors such as hunting and food supply. With two parents around, there’s always a conflict of interests, which can have a detrimental effect on the quality of the offspring. In evolutionary terms, the best strategy for any parent in the animal world is to find someone else to care for their offspring, so they can concentrate on breeding again. So it’s normal for parents to try to pass A. Single mums produce stronger sons. B. Single mums do not produce daughters. C. Two-parent families produce less attractive children. D. Two-parent families produce more beautiful offspring. [多选题]读取的比差值保留到0.001%,相位差保留到0.01'互感器的检定准确度级别为( )。
A.0.1级; B.0.2级; C.0.5级; D.1.0级。 [单项选择]在Visual Basic中,要强制用户对所用的变量进行显式声明,这可以在哪里设置
A. 算术运算符>关系运算符>连接运算符 B. 算术运算符>连接运算符>逻辑运算符 C. 连接运算符>算术运算符>关系运算符 D. 逻辑运算符>关系运算符>算术运算符 [单项选择]甲型病毒性肝炎的潜伏期是()
A. 1~3周 B. 2~6周 C. 4~8周 D. 6~10周 E. 8~12周 [判断题]负荷管理终端处于保电状态时可以执行主站下发的跳闸命令。()
A.正确 B.错误 [判断题]《客户电能计量装置拆除作业指导书》3作业流程,客户电能计量装置拆除工作流程应先拆除电能表后拆除互感器。
A.正确 B.错误 [多选题]3.568.
GPRS终端功率数据不正常,下面描述正确的是( )。 A.脉冲线未接好 B.终端电池损坏 C.脉冲常数不对 D.接口电路元件损坏 [单项选择]减少焊缝中硫、磷、含量的主要措施是()。
A. 烘干焊条,除去焊口表面污物 B. 限制原材料中的硫、磷的含量 C. 采用酸性焊条 [单项选择]有4个浓度都是0.01mol/kg的电解质溶液,其中平均活度系数最大的是:()
A. KCl B. CaCl2 C. Na2SO4 D. AlCl3 [单选题]《铁路旅客运输服务质量规范》(铁总运〔2016〕247号)规定:行李车内无违章运输物品,无闲杂人员,货仓拉门()。对押运人员查验车票、押运证、身份证,告知注意事项并进行登记。
A.关闭 B.加销 C.加明锁 D.锁闭 [多项选择]使用呼吸机的护理要点,以下哪些是正确的?()
A. 专人监护 B. 经常检查呼吸机的各项参数 C. 预防感染,隔日更换湿化器滤纸 D. 撤离呼吸机时应逐渐安全撤离 E. 呼吸机管道应每人一套,撤机后消毒待用 [多选题]机场公安对查获或者到案的违法嫌疑人应当进行安全检查,发现( )以及与案件有关的需要作为证据的物品的,应当立即扣押。
A.违禁品 B.管制器具 C.武器 D.易燃易爆等危险品 [多选题]稽核人员开展任期、离岗、离任经济责任审计时必须坚持( )。
A.客观公正 B.实事求是 C.廉洁奉公 D.保守秘密 E.关系人稽核回避制度 [判断题]利用电容储存电能,然后迅速释放进行加热完成点焊的方法叫做电容储能缝焊。(1.0分)
A.正确 B.错误 我来回答: 提交
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