油管头的作用是（）下入井中的油管、井下工具，密封油套环形空间。A、固定 B、密闭 C 发布时间：2017-06-30 17:35 │ 来源：www.tikuol.com 题型：单项选择题 问题： 油管头的作用是（）下入井中的油管、井下工具，密封油套环形空间。A、固定B、密闭C、吊装D、悬挂
题型：单项选择题 下列行为习惯中与健康不相符的，你认为需要调整的是[ ]A．在购买食品和药品时，我会注意察看保质期和合格证，当我生病躺在床时，爸妈给我喂药，我会从心里感谢B．在饮食中，我会吃喜欢的牛肉，但我也不忘记吃青菜，食品过期变质后不可食用C．遇到好玩的网络游戏时，我会抛弃所有、废寝忘食地连续数日去攻关D．青少年应该不吸烟、不喝酒，应当绝对禁止吸毒，发现有人吸烟时，会友善提醒 查看答案
题型：单项选择题 完形填空。 A middle-aged woman in an old dress stepped hesitantly without an appointment into the president of Harvard University's outer office. The secretary could immediately _1_ that such a hick(乡下人) had no 2 at Harvard. "I want to see the president", she said softly. "He'll be_3_ all day," the secretary snapped. "I'll wait, " the woman replied. For hours, the secretary _4_her, hoping that she would finally become _5 and go away. She didn't. And the secretary finally had to disturb the president. The president _6_ appeared toward her. The woman told him, "I had a son that _7_ Harvard for one year but was accidentally killed. And I would like to put up a _8 for him, somewhere on campus". The president wasn't 9 but annoyed. "Madam," he said, "We can't put up a _10_ for every person who attended Harvard and _11_. If we did, this place would look like a cemetery(墓地)". "Oh, no," the woman explained 12 ," I don't want to erect a statue. I would like to give a building to Harvard." 13 at the old dress, the president _14 , "A building! Do you have any 15 idea how much a building costs? We have over eight million dollars in the physical(物质的) costs at Harvard". For a moment the woman was _16_. The president was pleased. He could get rid of her now. "Is that all it costs to start a _17_?" and then the woman asked quietly._18_ that Mrs. Leland Stanford walked away, traveling to Palo Alto, California where she _19_ the university that bears her _20_, a memorial to her son that Harvard no longer cared about.( )1. A. say ( )2. A. business ( )3. A. tired ( )4. A. scolded ( )5. A. scared ( )6. A. hurriedly ( )7. A. visited ( )8. A. memorial ( )9. A. surprised ( )10. A. photo ( )11. A. left ( )12. A. slowly ( )13. A. Glaring ( )14. A. laughed ( )15. A. strange ( )16. A. silent ( )17. A. class ( )18. A. For ( )19. A. established ( )20. A. wish B. see B. student B. free B. treated B. uninterested B. coldly B. attended B. sign B. disappointed B. tomb B. graduated B. quickly B. Smiling B. responded B. wise B. sorry B. course B. By B. built B. promise C. tell C. question C. ill C. comforted C. discouraged C. patiently C. researched C. lab C. interested C. statue C. appreciate C. unpleasantly C. Glancing C. debated C. absurd C. ashamed C. university C. In C. organized C. name D. admit D. relative D. busy D. ignored D. troubled D. angrily D. built D. study D. touched D. will D. died D. strongly D. Pointing D. advised D. practical D. painful D. cemetery D. With D. managed D. cost 查看答案
题型：单项选择题 某计算机的虚拟存储系统有40位虚拟地址，32位实际地址，虚页为1M(220)。假设有效位、保护位、修改位和使用位共用去四位，所有虚页都在使用。则页表大小为 (20) ，页面的大小为 (21) 。（21）处填（）。A．1MB．216C．212D．16M 查看答案
题型：单项选择题 腰骶部及骨盆特殊检查中，"患者俯卧位，双下肢伸直，检查者一手按住其骶髂部，另一手握患侧踝部，并将小腿抬起使膝关节逐渐屈曲，足跟接近臀部"的是（）A.屈膝试验B.骨盆分离与挤压试验C.股神经紧张试验D."4"字试验E.分腿试验（床边伸髋试验） 查看答案