A.3 2 1 0
B.0 1 2 3
C.2 1 0
D.0 1 2
The humorous story is strictly a work of art--high and delicate (精美的) art--and only an artist can tell it; But no art is necessary in telling the comic and witty stories; anybody can do it. The art of telling a humorous story--I mean by word of mouth, not print--was created in America, and has remained at home.
The humorous story is told seriously; the teller does his best to hide the fact that he himself even suspects that there is anything funny about it; but the teller of the comic story tells you beforehand that it is one of the funniest things he has ever heard, then tells it with eager delight, and is the first person to laugh.
When he gets through, and sometimes, if he has had good success, he is so glad and happy that he will repeat the point of it and glance around from face to face, collecting applause (喝彩), and then repeat it again.
Which story takes the longest to tell? ()
A.The humorous story.
B.The witty story.
C.The comic story.
D.All three take the same amount of time.
A.IC引脚偏出部分不可超过焊盘2/3宽度(W)引脚前端偏移不可超出焊盘
B.IC引脚偏出部分不可超过焊盘2/3宽度(W)引脚前端偏移可超出焊盘
C.IC引脚偏出部分不可超过焊盘1/4宽度(W)引脚前端偏移不可超出焊盘
D.IC引脚偏出部分不可超过焊盘1/4宽度(W)引脚前端偏移可超出焊盘
均质三棱柱ABCDEH重W=100N,∠AEB=90°,AE=EB,用六根连杆支撑如图所示。在CBEH面内作用一力偶,已知a=2m。求1、2、3杆的内力。
A.w 都是正的常数。则力在 t1= 0到t2=#图片1$#这段时间内所作的功为()。
B.#图片2$#
C.#图片3$#
D.#图片4$#
E.#图片5$#