运用增量分析方法很容易解释何以发达国家对环境质量的关心一般超过发展中国家。因此,用发达国
A.用户查询和申请携号转网的授权码很容易,发送短信就能完成,但办理携号转网限制很多,如必须通过转网资格审核
B.近八成用户表示当前运营商资费高,近三成用户认为对方运营商资费优惠大,说明资费是影响用户携号转网的重要因素
C.三大运营商都已积极表态要全面落实携号转网,但实际上他们认为目前的通信资费并不高, 而携号转网的意义也不大
D.不少发达国家携号转网基本实现零门槛离不开强力监管,我国全面实行携号转网,监管部门也应完善相关法规制度
It is fairly common for an industrial cluster to break up and for production to move to locations with lower wages when the technology of the industry is no longer rapidly improving--when it is no longer essential to have the absolutely most modern machinery,when the need for highly skilled workers has declined,and when being at the cutting edge of innovation conveys only a small advantage.Explain this tendency of industrial clusters to break up in terms of the theory of external economies.
A.①②
B.②③
C.①③
D.①②③
A.美感与实用活动无关,所以美感并不来自现实生活
B.吃饭和喝水更多体现的是快感
C.给人美感的东西未必给人快感
D.给人快感的东西未必给人以美感
此题为判断题(对,错)。
A.食药安全治理可能在中短期内取得成效
B.政府对食药安全的治理能力须全面提升
C.食药安全治理是个长期复杂的系统工程
D.应将食药纳入安全治理的综合体系之中