下列何种微生物培养时会产生α-溶血环现象()A.淋病奈瑟菌 B.肺炎链球菌 C.军团

题型:单项选择题

问题:

下列何种微生物培养时会产生α-溶血环现象()

A.淋病奈瑟菌

B.肺炎链球菌

C.军团菌

D.肺炎支原体

E.肺炎衣原体

考点:西药执业药师药学综合知识与技能西药执业药师药学综合知识与技能38
题型:单项选择题

某村民在冬季较密闭的房内围着一盆煤火编织席子,致使中年妇女出现眩晕、头痛、恶心,并伴有心前区紧迫感和针刺样疼痛 造成该症状的毒物是一种()

A.原浆毒物

B.血液神经毒物

C.酶源毒物

D.细胞毒物

E.神经毒物

题型:单项选择题

规模报酬是指在技术水平不变的条件下,当各种生产要素按相同比例增加,即生产规模扩大时产量变化的情况。人们经过考察发现,规模报酬存在( )三个阶段。

A.递减、不变和递增

B.递增、不变和递减

C.递增、递减和不变

D.不变、递增和递减

题型:单项选择题

What is Math Anxiety?

Math anxiety or fear of math is actually quite common. Math anxiety is quite    1  to stage-fright. Why does someone suffer   2  ? Fear of something going wrong in front of a crowd? Fear of   3  the lines? Fear of being judged   4  ? Fear of going completely blank? Math anxiety conjures(使现出) up fear of some type. The fear that one won't be able to do the   5  or the fear that it's too hard or the fear of failure which often stems(起因于) from having a lack of   6  . For the most part, math anxiety is the   7  about doing the math right, our minds draw a   8  and we think we'll fail and of course the more frustrated and anxious our minds become, the   9  the chance for drawing blanks. Added pressure of having time limits on math tests and exams also cause the levels of anxiety grow for many students.

Where Does Math Anxiety Come From?

Usually math anxiety stems from    10 experiences in mathematics. Typically math phobias have had math presented in such a fashion that it led to limited understanding. Unfortunately, math anxiety is often  11   poor teaching and poor experiences in math which typically leads to math   12  . Many of the students I've encountered with math anxiety have demonstrated an over reliance on procedures in math as opposed to actually understanding the math. When one tries to memorize procedures, rules and routines without much   13  , the math is quickly forgotten and   14  soon sets in. Think about your experiences with one concept --- the division of fractions(小部分). You probably learned about reciprocals(倒数) and inverses. In other words, 'It's not yours to reason why, just invert(反转) and multiply'(乘). Well, you memorized the rule and it   15   . Why does it work? Do you really understand why it works? Did anyone every use pizzas or math manipulative(巧妙处理的) to show you why it works? If   16   , you simply memorized the procedure and that was that. Think of math as memorizing all the procedures --   17  if you forget a few? Therefore, with this type of strategy, a good   18  will help, but, what if you don’t have a good memory. Understanding the math is critical. Once students   19  they can do the math, the whole notion of math anxiety can be overcome. Teachers and parents have an important   20  to ensure students understand the math being presented to them.

(    ) 1. A. different           B. similar             C. far                          D. familiar

(    ) 2. A. speech              B. performance     C. threatens                  D. stage-fright

(    ) 3. A. understanding   B. memorizing      C. forgetting                D. reading

(    ) 4. A. poorly              B. crazily              C. well                        D. publicly

(    ) 5. A. Chinese            B. math                C. English                   D. physics

(    ) 6. A. wish                B. conscience        C. determination           D. confidence

(    ) 7. A. fear                 B. joy                   C. pleasure                   D. doubt

(    ) 8. A .failure              B. choice              C. blank                             D. death

(    ) 9. A. further             B. greater             C. less                         D. smaller

(    ) 10. A. unpleasant      B. unfair               C. pleasant                   D. successful

(    ) 11. A. because           B. thanks to          C. resulting in              D. due to

(    ) 12. A. fear                B. anxiety             C. failure                     D. misunderstanding

(    ) 13. A. forgetting       B. use                   C. understanding          D. knowledge

(    ) 14. A. panic             B. excitement        C. disappointment         D. encouragement

(    ) 15. A. opens             B. works               C. starts                       D. runs

(    ) 16. A. so                  B. possible            C. not                          D. any

(    ) 17. A. Where            B. Why                C. When                      D. What

(    ) 18. A. memory         B. method             C. brain                       D. body

(    ) 19. A. fill                 B. realize              C. confirm                   D. recognize

(    ) 20. A. task                B. aim                  C. appointment             D. role

题型:单项选择题

关于我国粮食生产的说法正确的是()

A.棉花绝大部分分布在北方

B.苹果是我国南方最主要的水果

C.水稻主要分布在北方,小麦主要分布在南方

D.水稻主要分布在南方,小麦主要分布在北方

题型:单项选择题

蝶阀、球阀的开关角度为90°,反映在蜗杆上转动角度为90°~180°。蜗轮往往有()部位磨损大些可调换蜗轮位置90°~180°。

A、1/3~2/3

B、1/4~2/4

C、1/2~3/4

D、1/4~3/4

更多题库