问题
最新题目
-
求曲面x2+y2+z2=1 上平行于平面x-y+2z=0的切平面方程..
-
We always aim to give our ()attention to our clients.A personalB singleC onlyD once..
-
News came from the sales manager ______ the new .....
-
为何要尝试兼职工作?A:对某一类领域不确定;B:对某一类领域有.....
-
Will you () me a favor please?A. doB. makeC. bringD. give..
-
已知变上限的定积分∫axf(t)dt=5x3+40 求f(x)与a。..
冀公网安备 13070302000102号