PL[1] = [2, 1, 5] PL[2] = [1, *, 3] PL[3] = PL[1] + PL[2] 执行上述运算后,PL[3]中的i,j,k分为为____、____、_____。
PL[1] = [2, 1, 5] PL[2] = [1, *, 3] PL[3] = PL[1] + PL[2] 执行上述运算后,PL[3]中的i,j,k分为为____、____、_____。
图示结构C点的水平位移是()。(结构杆件EA为常量) A: 2(√2+1)PL/EA(←) B: 2(√2+1)PL/EA(→) C: (√2+1)PL/EA(→) D: (2√2+1)PL/EA(←)
图示结构C点的水平位移是()。(结构杆件EA为常量) A: 2(√2+1)PL/EA(←) B: 2(√2+1)PL/EA(→) C: (√2+1)PL/EA(→) D: (2√2+1)PL/EA(←)
图示多跨静定梁中,C截面的弯矩为(下侧受拉为正):[img=288x95]180330224e7f752.jpg[/img] A: Pl B: -Pl C: Pl/2 D: -Pl/2
图示多跨静定梁中,C截面的弯矩为(下侧受拉为正):[img=288x95]180330224e7f752.jpg[/img] A: Pl B: -Pl C: Pl/2 D: -Pl/2
以下类方法定义正确的是() A: class Student: fav=("唱歌","跳舞","绘画") def showFav(cls): for item in cls.fav: print(item) B: class Student: fav=("唱歌","跳舞","绘画") @classmethod def showFav(cls): for item in fav: print(item) C: class Student: fav=("唱歌","跳舞","绘画") @classmethod def showFav(cls): for item in cls.fav: print(item) D: class Student: fav=("唱歌","跳舞","绘画") @classmethod def showFav(): for item in fav: print(item)
以下类方法定义正确的是() A: class Student: fav=("唱歌","跳舞","绘画") def showFav(cls): for item in cls.fav: print(item) B: class Student: fav=("唱歌","跳舞","绘画") @classmethod def showFav(cls): for item in fav: print(item) C: class Student: fav=("唱歌","跳舞","绘画") @classmethod def showFav(cls): for item in cls.fav: print(item) D: class Student: fav=("唱歌","跳舞","绘画") @classmethod def showFav(): for item in fav: print(item)
图示结构,EI=常数,弯矩MCA为:() A: Pl/2(左侧受拉) B: Pl/4(左侧受拉) C: Pl/2(右侧受拉) D: Pl/4(右侧受拉)
图示结构,EI=常数,弯矩MCA为:() A: Pl/2(左侧受拉) B: Pl/4(左侧受拉) C: Pl/2(右侧受拉) D: Pl/4(右侧受拉)
图示结构,截面B的转角等于() A: (1/6)(Pl/EI) B: (1/4)(Pl/EI) C: (1/2)(Pl/EI) D: Pl
图示结构,截面B的转角等于() A: (1/6)(Pl/EI) B: (1/4)(Pl/EI) C: (1/2)(Pl/EI) D: Pl
PL[1] = [1, 3, 2] PL[1] = PL[1] + [1, 1, *] 执行上述运算后,PL[1]中的i,j,k分为为____、____、_____。
PL[1] = [1, 3, 2] PL[1] = PL[1] + [1, 1, *] 执行上述运算后,PL[1]中的i,j,k分为为____、____、_____。
图示结构,各杆EI=常数,在给定荷载作用下,MBA等于()。 A: Pl/2(左侧受拉) B: Pl/2(右侧受拉) C: Pl(左侧受拉) D: Pl(右侧受拉)
图示结构,各杆EI=常数,在给定荷载作用下,MBA等于()。 A: Pl/2(左侧受拉) B: Pl/2(右侧受拉) C: Pl(左侧受拉) D: Pl(右侧受拉)
图示刚架,支座A的反力矩为[img=170x157]1802e2836c5fed0.png[/img] A: Pl/2 B: Pl C: 3Pl/2 D: 2Pl
图示刚架,支座A的反力矩为[img=170x157]1802e2836c5fed0.png[/img] A: Pl/2 B: Pl C: 3Pl/2 D: 2Pl
图所示机构的自由度是( )。[img=197x160]18034e492717e18.jpg[/img] A: n=8, PL=11, Ph=1, F=1 B: n=8, PL=10, Ph=2, F=2 C: n=9, PL=12, Ph=2, F=1 D: n=9, PL=13, Ph=0, F=1
图所示机构的自由度是( )。[img=197x160]18034e492717e18.jpg[/img] A: n=8, PL=11, Ph=1, F=1 B: n=8, PL=10, Ph=2, F=2 C: n=9, PL=12, Ph=2, F=1 D: n=9, PL=13, Ph=0, F=1