放线菌与龋齿和牙周炎有关,能产生一种粘性很强的物质,这种物质是() A.6-去氧太洛

题型:单项选择题 A型题

问题:

放线菌与龋齿和牙周炎有关,能产生一种粘性很强的物质,这种物质是()

A.6-去氧太洛糖

B.荚膜

C.普通菌毛

D.顶端结构

E.鞭毛

考点:预防疾控微生物检验技术预防疾控微生物检验技术综合练习预防疾控微生物检验技术综合练习题库
题型:单项选择题 A型题

“一切具体事物和现象的存在、发展都是有条件的”是( )。

A.形而上学的观点

B.唯物辩证法的观点

C.机械论的观点

D.外因论的观点

题型:单项选择题 A型题

实物期权类型主要包括()。

A.等待投资型期权

B.成长型期权

C.放弃型期权

D.买方型期权

E.柔性期权

题型:单项选择题 A型题

Teachers need to be aware of the emotional, intellectual, and physical changes that younga-duhs experience. And they also need to give serious (91) to how they can best (92) such changes. Growing bodies need movement and (93) , but not just in ways that emphasize competition. (94) they are adjusting to their new bodies and a whole host of new intellectual and emotional challenges, teenagers are especially self-conscious and need the (95) that comes from achieving success and knowing that their accomplishments are (96) by others. However, the typical teenage lifestyle is already filled with so much competition that it would be (97) to plan activities in which there are more winners than losers, (98) , publishing newsletters with many student-written book reviews, (99) student artwork, and sponsoring book discussion clubs. A variety of small clubs can provide (100) opportunities for leadership, as well as for practice in successful (101) dynamics. Making friends is extremely important to teenagers, and many shy students need the (102) of some kind of organization with a supportive adult (103) visible in the background.
In these activities, it is important to remember that young teens have (104) attention spans. A variety of activities should be organized (105) participants can remain active as long as they want and then go on to (106) else without feeling guilty and without letting the other participants (107) This does not mean that adults must accept irresponsibility. (108) , they can help students acquire a sense of commitment by (109) for roles that are within their (110) and their attention spans and by having clearly stated rules.

A.in effect

B.as a result

C.for example

D.in a sense

题型:单项选择题 A型题

根尖片投照的分角技术是指

A.X线与被检查牙齿的长轴垂直
B.X线与胶片垂直
C.X线与被检查牙齿的长轴及胶片之间的分角线垂直
D.X线与被检查牙齿的长轴和胶片之间的分角线平行
E.X线与咬合平面平行

题型:单项选择题 A型题

流行病学的研究方法主要是()

A.描述性研究

B.分析性研究

C.实验性研究

D.理论性研究

E.以上均是

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