| Most people have had a dog or wanted
one as their companion at some time in their lives. If you are thinking of
buying a dog, however, you should first decide what sort of companion you need
and whether the dog is likely to be happy in the surroundings you can provide.
Specialists’ advice is useful to help you choose the most suitable kind of dog.
But in part the decision depends on common sense. Different dogs were originally
developed to perform specific tasks. So, if you want a dog to protect you or
your house, for example, you should choose the one that has the right size and
characteristics. (21) {{U}}You must also be ready to devote a great deal of time
to training the dog when it is young and give it the exercise it needs
throughout its life, unless you live in the countryside and can let it run
freely.{{/U}} Dogs are de A. It must be trained so that it won’t bite. B. It demands more food and space. C. It needs more love and care. D. It must be looked after carefully. [单选题]《铁路技术管理规程》（铁总科技〔2014〕172号）规定，普速铁路旅客列车停靠的高站台安全标线距站台边缘（）mm。
A.1000 B.1200 C.1300 D.1500 [单选题] （）是指对站内设备及设施外观、异常声响、设备渗漏、监控系统、二次装置及辅助设施异常告警、消防安防系统完好性、换流站运行环境、缺陷和隐患跟踪检查等方面的常规性巡查，具体巡视项目按照现场运行通用规程和专用规程执行。
A.专业巡视 B.例行巡视 C.熄灯巡视 D.特殊巡视 [简答题]SCADA系统登录后最上边页眉处有哪些模块?
[单项选择]用碱致嫩菜肴原料，营养成分会受到破坏，损失最大的是（）。
A. 脂肪 B. 蛋白质 C. 维生素B族 D. 碳水化合物 [填空题]当雨量报警监测点1h降雨量降至20mm及以下，且持续 ( ) 分钟以上时，可逐步解除限速。
[单项选择]有氧运动：指人体在氧气充分供应的情况下进行的强度低、有节奏、不间断的对运动技巧要求不高的体育锻炼。
下列属于有氧运动的是( )。 A. 小李为了增加臂力，一直坚持举重、投掷锻炼 B. 小赵、小苏、小吴、小武组队参加4×100米接力赛 C. 小王为在运动会取得好成绩，下午放学后练习撑杆跳 D. 小陈身体微胖，为有效减肥，他每天早晨到公园快走半小时 [判断题]若发生机械伤害，应立即报请救援，采取防止二次伤害措施。
A.正确 B.错误 我来回答: 提交
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