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填空(共20小题;每小题1.5分,满分30分) 阅读下面短文,掌握其大意,然后从各题所给的四个选项(A、B、C和D)中,选出最佳选项。 Robby was 11 years old when his mother (a single mom) dropped him off for his first piano lesson. I prefer students begin at an earlier age, which I explained to Robby. 21 Robby said that it had always been his mother’s 22 to hear him play the piano. So I took him as a student. Hard as Robby tried, he lacked the 23 of music. However, he persisted and at the end of each weekly 24 he’d always say, “My mom’s going to hear me play someday.” But it seemed 25 . I only knew his mo ther from a distance as she dropped Robby off or waited in her aged car to 26 him up. She always 27 and smiled but never visited my class. Then one day Robby 28 com ing to our lessons. He telephoned me and said his mother was 29 . A few weeks after that, I was 30 my students for the upcoming recital when Robby came and asked me 31 he could be in the recital. “Miss Hondorf… I’ll just go to play!” he insisted. The night for the recital came. The high school gym was 32 with parents, friends and relatives. The recital 33 well. Then Robby came up on stage. I was 34 when he announced that he had chosen Mozart’s Concerto No. 21 in C Major. I was not prepared for what I h ad heard 35 his fingers were light on the keys. They even 36 on the keys… He played so well that everyone was on their 37 in wild applause ( 鼓掌). In tears I ran up on stage. “Oh Robby! How 38 you do it?” “Well Miss Hondorf… I 39 on practicing at home. Remember I told you my mom was sick? Well, 40 she had cancer and passed away this morning. She was born deaf so tonight was the first time she ever heard me play…” 小题1:. A.Although B.Because C.But D.Thus 小题2:. A.idea B.dream C.desire D.imagination 小题3:. A.feeling B.knowledge C.education D.sense 小题4:. A.trial B.attempt C.performance D.lesson 小题5:. A.helpless B.hopeless C.senseless D.worthless 小题6: A.put B.take C.make D.pick 小题7: A.waved B.listened C.stared D.watched 小题8: A.escaped B.avoided C.stopped D.refused 小题9: A.deaf B.lonely C.away D.sick 小题10: A.preparing B.arranging C.persuading D.taking 小题11: A.that B.whether C.when D.how 小题12: A.filled B.covered C.crowded D.connected 小题13: A.went on B.turned on C.carried on D.kept on 小题14: A.delighted B.proud C.confused D.surprised 小题15: A.until B.while C.before D.since 小题16: A.danced B.tapped C.hit D.flew 小题17: A.heads B.feet C.ears D.eyes 小题18: A.should B.would C.could D.might 小题19:. A.went B.kept C.continued D.stuck 小题20:. A.unfortunately B.suddenly C.strangely D.actually
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【简答题】GB150-1998 标准中规定:焊接接头系数φ应根据受压元件的焊接接头形式及无损检测的长度比例确定。双面焊对接接头和相当于双面焊的全焊透对接接头:100%无损检测 φ= ;局部无损检测φ= 。
【单选题】维持胸膜腔内压的前提条件是( )
A.
呼吸肌舒缩
B.
肺的弹性阻力
C.
胸膜腔密闭
D.
胸廓弹性阻力
【单选题】压力容器采用双面焊对接接头和相当于双面焊的全熔透对接接头,局部无损检验时,焊缝系数φ应取
A.
1
B.
0.9
C.
0.85
D.
0.8
【单选题】李斯特认为,保护关税的主要对象应当是( )。
A.
人民赖以生存的农业
B.
发展成熟的手工业
C.
保护国家安全的军工业
D.
新兴的(即幼稚的)、面临国外强有力竞争的并具有发展前途的工业。
【单选题】采用双面焊对接接头和相当于双面焊的全焊透对接接头时,经100%无损检测其焊接街头系数是
A.
1.0
B.
2.0
C.
3.0
D.
4.0
【单选题】控编程相对编程是指()。
A.
相对于加工起点位置进行编程
B.
相对于下一点的位置编程
C.
相对于当前位置进行编程
D.
以方向正负进行编程
【单选题】相对编程是指()
A.
相对于加工起点位置进行编程
B.
相对于下一点的位置编程
C.
相对于当前位置进行编程
D.
以方向正负进行编程
【多选题】依据《压力容器安全技术监察规程》,判断下述有关用焊接方法制造的压力容器焊接接头系数的说法哪些是正确的()
A.
确定焊接接头系数涉及的无损检测比例分为全部无损检测,局部无损检测和无法无损检测三种。
B.
确定焊接接头系数涉及的焊接接头型式有双面焊或相当于双面焊全熔透的对接焊缝,有金属垫板的单面对接焊缝和无垫板的单面焊环向对接焊缝。
C.
在全部无损检测时,钢对应双面焊或相当于双面焊全熔透的对接焊缝、有金属垫板的单面焊接对接时缝和无垫板的单面焊环向对接焊缝有相应的焊接接头系数。
D.
确定焊接接头系数所指的无损检测,对钢制压力容器以射线和超声检测为准。对有色金属压力容器原则上以射线检测为准。
【单选题】血小板致密颗粒中不含哪种成分
A.
ADP
B.
ATP
C.
5-HT(5-羟色胺)
D.
Ca2+
E.
β-TG(β-血小板球蛋白)
【简答题】双面焊对接接头和相当于双面焊的全焊透对接接头,局部无损检测时,焊接接头系数取值为()
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