【单选题】下列选项中不属于检索各国专利文献途径的是()
【单选题】听力原文: China on Tuesday expressed its regret over the EU's recent failure to foot its pledge of lifting its arms sales ban to China. Chinese Foreign Ministry spokesman Liu Jianchao made the remarks at ...
A.
The EU would develop a strategic partnership with China
B.
The EU had decided to lift the arms ban later this year.
C.
The EU would try to resolve the trade dispute with China quickly.
D.
The EU promised to intensify dialogue in all areas.
【单选题】听力原文: China on Tuesday expressed its regret over the EU' s recent failure to foot its pledge of lifting its arms sales ban to China. Chinese Foreign Ministry spokesman Liu Jianchao made the remarks at...
A.
the EU would develop a strategic partnership with China
B.
the EU had decided to lift the arms ban later this year
C.
the EU would try to resolve the trade dispute with China quickly
D.
the EU promised to intensify dialogue in all areas
【单选题】以下对职业卫生调查研究特点的表述,不正确的是( )。
A.
研究过程中是人为地施加干预措施,而不是客观地观察记录某些现象的现状及其相关特征
B.
在调查中,欲研究的现象及其相关特征是客观存在的,不能采用随机分配的方法来平衡或消除非研究因素对研究结果的影响
C.
混杂因素的控制常借助于标准化法、分层分析、多因素统计分析等方法
D.
调查研究多采用问卷调查,容易产生误差和偏倚,应特别注意设计技巧和质量控制
【单选题】Only in this way _____ study English well.
【单选题】作者在 《 文学是灯 》 中用了较多的笔墨去写农村生活 ,下列对其理解错误的一项是( )
A.
作者在农村生活中遇到的人和事,无一不体现出人性之美,正如文学作品所要反映出来的一样,也是作者日后对文学的态度的一种肯定。
B.
作用意在通过自己的农村生活经历,从文学与生活,与人的关系入手说明文学的本质。
C.
这段文字说明了文学之所以能够给人以光亮,不是文学本身,而是文学对生活中人性之美的描绘。
D.
作者下放生活的经历纠正了作者对文学本质的认识,坚定了其对文学作用的信心。
【单选题】Only in this way ______ this difficult math problem.
【判断题】发电机运转时,可以用试火的方法检查发电机是否发电。