【简答题】请用下列单词的适当形式填空。 make an attempt to, get rid of, regardless of, open up to, count on, result from, come across, in a flash, without delay, be caught in 1. It's time that you your bad habits. 2....
【单选题】关于平面力的投影,以下说法哪个是正确的?( )
【单选题】This graphic shows the results of an attempt to open a Telnet connection to router ACCESS1 from router Remote27. Which of the following command sequences will correct this problem? ()
A.
ACCESS1(config)# line console 0 ACCESS1(config-line)# password cisco
B.
Remote27(config)# line console 0 Remote27(config-line)# login Remote27(config-line)# password cisco
C.
ACCESS1(config)# line vty 0 4 ACCESS1(config-line)# login ACCESS1(config-line)# password cisco
D.
Remote27(config)# line vty 0 4 Remote27(config-line)# login Remote27(config-line)# password cisco
E.
ACCESS1(config)# enable password cisco
F.
Remote27(config)# enable password cisco
【单选题】当力F沿两个相互垂直的坐标轴x、y方向分解为Fx与Fy时,这两个分力与力F在这两个坐标轴上的投影关系是( )。
B.
等同的,即力F在这两坐标轴上的投影,就是该力在这两个坐标轴方向上的分量
【简答题】牛顿粘性定律表达式为______________
【简答题】已知一对标准直齿圆柱齿轮传动,其传动比i 12 =2,主动轮转速n 1 =400r/min,主动齿轮分度圆直径d 1 =80mm,模数m=4,求(1)从动轮转速n 2 ; (2)两齿轮的齿数z 1 ,z 2 。
【简答题】牛顿粘性定律表达式为____________,其粘性系数(粘度)的物理意义是____________。
【单选题】_____ stronger than reason and knowledge born ofexperience told her that he loved her.
【判断题】An attempt to open a nonexistent file for input generates a syntax error.