化学与资源、环境、生活关系密切,下列说法错误的是 A.维生素C具有还原性,在人体

题型:选择题

问题:

化学与资源、环境、生活关系密切,下列说法错误的是

A.维生素C具有还原性,在人体内起抗氧化作用

B.新型氢动力计程车可以降低PM2.5的排放,减少大气污染

C.碘是人体必需微量元素,所以要多吃富含高碘酸的食物

D.高纯度的二氧化硅广泛用于制作光导纤维,光导纤维遇强碱溶液会“断路”

考点:生活中的其他材料及应用(纳米材料、功能高分子材料等)生活中的元素(常量元素、微量元素)新型材料(新型陶瓷、单晶硅等)
题型:选择题

缺词填空(共10空;每空l分,计l0分)

根据短文内容和首字母提示,在下文空格处填入适当的词使短文完整。(每空一词)

Autumn is a season of both harvest and planting. Similarly, when we step into college, we harvest the hard work from high school, and at the same time, we plant hope for our f___小题1:___

Farmers take care of the plants and irrigate(灌溉) them with much e__小题2:___. We college students should also make full use of our time and work hard so t__小题3:___we can have a good harvest when we graduate.

Yangzhou University is a good place to plant our dreams. A___小题4:__ a student of Yangzhou university, I always feel proud and lucky to have a c__小题5:___ to study here. It is a college w_小题6:_ long history. People around me always c__小题7:__ for me, encourage me, and give me love.

Every year in autumn, my college w__小题8:___ new students and guides them to realize their dreams. They’ll spend the best time of their lives to look for the v__小题9:___of life here. I believe that Yangzhou University students will make great achievements someday, because our college is like a__小题10:___ and we will harvest what we plant here.

题型:选择题

试述如何对领导权力进行科学合理的划分与配置?

题型:选择题

回顾观察动物心脏的实验,请回答:

①心脏四个腔中______壁最厚.

②在心房和心室之间、心室和动脉之间可以观察到瓣膜,瓣膜的作用是______.

③心脏的左右两部分是______的(填:相通或不相通)

题型:选择题

按《工程建设标准编写规定》,标准名称宜由标准的对象、用途和特征名三部分组成,标准的特征名一般不包括()。

A.标准

B.规范

C.规程

D.规定

题型:选择题

关于惊恐发作下列描述错误的是()。

A.一般在没有客观危险的情景下发作

B.惊恐发作时患者有濒死感

C.惊恐发作可出现胸痛、胸闷症状

D.惊恐发作时意识模糊,事后难以回忆发作时经过

E.患者可同时伴有抑郁症状

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