(1)如图甲,AB、CD是某一点光源S发出的二条入射光线,请画出它们的反射光线,

题型:应用设计题

问题:

(1)如图甲,AB、CD是某一点光源S发出的二条入射光线,请画出它们的反射光线,标出点光源的位置,并完成光路图。

(2)如图乙,物块静止在斜面上,请画出物块所受摩擦力及斜面所受压力的示意图。

(3)通电螺线管的附近放置了一枚小磁针,小磁针静止时的位置如图丙所示。请在图上标出小磁针的N、S极和其中一条磁感线的方向。

考点:内能的概念
题型:应用设计题

ABO血型不合的新生儿溶血病可发生于第1胎,因自然界的ABO抗原因子可使O型血母亲的血清中产生

A.IgA抗A或B

B.IgG抗A或B

C.IgM抗A或B

D.IgE抗A或B

E.以上都不是

题型:应用设计题

企业工作人员应当坚持实事求是的作风,(  )。

A.一切从实际出发

B.对领导言听计从

C.坚持本本主义

D.努力提高自身思想素质

题型:应用设计题

A

Little Tommy was doing very badly in math. His parents had tried everything—tutors (家庭教师), cards, special learning centers—in short, everything they could think of. Finally they took Tommy to a catholic (天主教) school.

After the first day, little Tommy came home with a very serious look on his face. He didn’t kiss his mother and say hello. Instead, he went straight to his room and started studying. Books and papers were spread (铺开) out all over the room and little Tommy was hard at work. His mother was surprised. She called him down to dinner and as soon as he finished eating, he went back to his room, without a word. In no time he was back hitting the books as hard as before. This went on for some time, day after day while the mother tried to understand what was happening.

Finally, little Tommy brought home his report card. He quietly put it on the table and went up to his room and hit the books. His room looked at it and to her surprise, little Tommy got an A in math. She could no longer hold her curiosity (好奇心). She went to his room and asked, "Son, what was it Was it the nuns (修女)"

Little Tommy looked at her and shook his head," No. "

"Well then," she asked again. "WHAT was it"

Little Tommy looked at her and said, "Well, on the first day of school, when I saw that man nailed (钉) to the plus sign (加号), I knew they weren’t joking. \

The last sentence in the passage shows that().

A.Tommy felt sorry for the nail

B.Tommy was afraid of being nailed

C.Tommy didn’t like the plus sign

D.Tommy liked playing jokes on others

题型:应用设计题

动态投资回收期的评价标准是( )。

A.≤项目寿命期

B.≤基准投资回收期

C.≥项目寿命期

D.≤基准动态投资回收期

题型:应用设计题

中心站接收仪采用太阳能和蓄电池浮充方式供电。()

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