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【简答题】
Mark was a great kid from a bad neighborhood. Crime, drugs, fighting and poverty: You name the 1 and his neighborhood had it. A scholarship fund 2 his tuition to Catholic High School, where he was a great baseball player. Mark 3 in the classroom, though. He was bright, but behind, perhaps due to a 4 home environment. But there were problems 5 the time for all he needed to do. Some felt Mark should give up sports and 6 schooling. But, in reality, if he was going to attend college, he would need his 7 . A fellow teac her, Mrs. Jones, 8 to tutor Mark in math. I helped Mark with other areas of work. No one 9 us. Mrs.Jones 10 it up this way: “Pay day doesn't always e on Mondays.” When we were not working with Mark to 11 his skills for the ACT, Mark's dad took him to various 12 to talk with both baseball and football program co aches. He settled on the one college that offered him 13 to play both sports. But he 14 a good ACT score. It took months to receive the 15 of college entrance exams. One afternoon after school, Mark rushed into my office and yelled, “I'm going to college! I'm going to college !” “I guess you got your 16 ?” I asked. “W ell, yeah !” he laughed. “And guess what? I got one point more than I need to be 17 . Thank you! Now, where's Mrs. Jones? I've got to tell her, too!” Until that moment, I had 18 quite understood what “pay day doesn't always e on Mondays” 19 . But it was clear to me the instant Mark came to 20 his news. No amount of money could ever reward us as much as the news of a boy who finally had a chance at a better life.
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【单选题】程序段G90 X50 Z-60 R-2 F0.1;完成的是( )的单次循环加工(FANUC系统)。
A.
(A)圆柱面
B.
(B)圆锥面
C.
(C)圆弧面
D.
(D)螺纹
【简答题】(1)下列各组化合物中,属于同系物的是(填入编号) ,属于同分异构体的是(填入编号) 。 (2)有机物A: 在加热条件下和Br 2 按物质的量之比1:1发生的非邻位碳的加成反应方程式 。 (3)某高分子有机物 是由一种单体缩聚而成的,该单体的结构简式为 。
【单选题】下列有机化合物中属于同分异构体的正确组合是( ) 1CH 3 CH 2 CH 2 CH 2 CH 3 2CH 3 CH 2 CH 2 CH 2 CH 2 CH 3 3 4 5
A.
①和③
B.
②③⑤
C.
①和②
D.
③和④
【单选题】下列有机物中,属于同分异构体的是 (1)CH 3 OH  (2)CH 3 CH 2 OH  (3)CH 3 CH 2 CH 2 OH (4)CH 3 OCH 3
A.
(1)和(2)
B.
(1)和(3)
C.
(2)和(4)
D.
(1)、(2)和(3)
【单选题】下列有机物中属于1-丁烯( CH 2 =CHCH 2 CH 3 )同分异构体的是
A.
CH 3 CH=CHCH 3
B.
CH 3 CH 2 CH 2 CH 3
C.
CH 2 =CHCH=CH 2
D.
CH 3 CH=CHCH 2 CH 3
【单选题】GDB 调试器中要在代码中设置断点,使用下列哪项指令?( )
A.
list 或 l
B.
break 或 b
C.
watch
D.
run 或 r
【简答题】下列代码是根据下图编写的FANUC系统的数 控精加工程序 , 编程原点建在工件左下角上表面处 ,工件厚度为2mm,刀具T01为 12mm的立铣刀,半径补偿号为D01。请对行号为20,50,60,80,110,170,190的程序段进行注释,说明该程序段实现的功能或者指明刀具在该指令下运动的情况。(20分) O0005 N10 G17 G40 G90 G21 G94 G80 N20 M08 N30 ...
【单选题】小脑上脚的纤维上行止于背侧丘脑的( )
A.
腹后内侧核
B.
腹后外侧核
C.
腹前核和腹外侧核
D.
腹中间核
E.
后外侧核
【单选题】乙酸橙花酯是一种食用香料,结构如图所示。下列关于该有机物的说法有如下几种: ①该有机物有一种同分异构体属于酚类; ②该有机物属于酯类; ③该有机物不能发生银镜反应; ④该有机物的分子式为C 11 H 18 O 2 ; ⑤1mol该有机物最多能与1mol NaOH反应。其中正确的是
A.
①③④
B.
②③⑤
C.
①④⑤
D.
①③⑤
【单选题】程序段G90 X50 Z-60 R-2 F0.1;完成的是()单次循环加工。(FANUC系统)
A.
圆柱面
B.
圆锥面
C.
圆弧面
D.
螺纹
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