假想用剖切面剖开零件,将处在观察者和剖切面之间的部分移去而将其余部分向投影面投影所得 发布时间:2017-08-11 00:25 │ 来源:www.tikuol.com 题型:单项选择题 问题: 假想用剖切面剖开零件,将处在观察者和剖切面之间的部分移去而将其余部分向投影面投影所得的图形称为()A.剖视图B.旋转剖面图C.局剖图
题型:单项选择题 男,42岁。形体肥胖,因进食油腻食物后出现突发上腹部剧烈持续性疼痛,阵发性加重,向背后放射。检查;血、尿淀粉酶明显增高,B超检查胰腺弥漫性增大,胰尾大片低回声。体检;血压100/70mmHg(13.5/9kPa),上腹部压痛,肠鸣音减弱。以下治疗不当的是A.奥曲肽静脉滴注B.奥美拉唑抑酸C.加贝酯减少胰腺分泌D.丹参活血化淤E.大剂量654-2止痛 查看答案
题型:单项选择题 完形填空。 Life is not easy, so I'd like to say "When anything happens, believe in yourself." When I was a young boy, I was so shy to talk to anyone that my classmates 1 laughed at (嘲笑) me. I was sad but could do nothing. Later, 2 happened, and it changed my life. It was an English speech contest (比赛). My 3 asked me to takepart in it. What a 4 idea! It meant I had to speak before all the teachers and students of my school. " 5 , boy. Believe in yourself. You are sure to win the contest." Then Mother and I talked about many different topics. 6 I chose the topic "Believe in yourself", I tried my best to remember all the speech andpracticed it 7 100 times. With the help of my mother, I did well in the contest. I could hardly believe myselfwhen the 8 came that I had won the first place; I heard the cheers from the teachers and the students. Those classmates who once looked down on me, now all 9 "Congratulations!" to me. My mother hugged (拥抱) meand cried excitedly. Since then, everything has changed for me. 10 I do anything, I try to tell myself to be sure and I will find myself. This is not only for a person but also for a country. ( )1. A. never ( )2. A. something ( )3. A. father ( )4. A. funny ( )5. A. Hurry up ( )6. A. At last ( )7. A. at ( )8. A. letter ( )9. A. said ( )10. A. Although B. often B. anything B. teacher B. good B. Come on B. In fact B. in B. topic B. passed B. If C. also C. everything C. friend C. terrible C. Look out C. At once C. with C. news C. sent C. Because D. still D. nothing D. mother D. special D. Hold on D. At firstD. over D. report D. gave D. When 查看答案
题型:单项选择题 如图所示,用弹簧秤拉着一支薄壁平底玻璃试管,将它的开口向下插在水银槽中,由于管内有一部分空气,此时试管内水银面比管外水银面高h。若试管本身的重力与管壁的厚度均不计,此时弹簧秤的示数等于[ ]A.进入试管内的H高水银柱的重力B.外部大气与内部空气对试管平底部分的压力之差C.试管内高出管外水银面的h高水银柱的重力 D.上面(A)(C)所述的两个数值之差 查看答案