单选题：
向量_________________垂直于平面2(x-3)-3(y+2)+5(z-5)=0
向量_________________垂直于平面2(x-3)-3(y+2)+5(z-5)=0
举一反三
- 向量_________________垂直于平面2(x-3)-3(y+2)+5(z-5)=0 A: -3i+2j-5k B: 2i-3j+5k C: (2-3)i+(-3+2)j+(5-5)k
- 执行以下语句的结果：dict1={"x":1,"y":2,"z":3}dict2={"x":4,"a":5}dict1.update(dict2) A: {"x":1,"y":2,"z":3,"x":4,"a":5} B: {"x":4,"a":5,"x":1,"y":2,"z":3} C: 有重复项，结果有误！ D: {"x":4,"y":2,"z":3,"a":5}
- x=2,y=5,z=3 (x>y)+z*4=?
- 图示的力分别在x、y、z三轴上的投影为（） A: X=2√2P/5，Y=3√2P/10，Z=√2P/2 B: X=2√2P/5，Y=-3√2P/10，Z=-√2P/2 C: X=-2√2P/5，Y=3√2P/10，Z=√2P/2 D: X=-2√2P/5，Y=-3√2P/10，Z=√2P/2
- int x=3,y,z;<br/>y=-x++;<br/>z=y+8/++x;<br/>Console.WriteLine{{0},{1},{2}",x,y,z);<br/>此程序的输出结果是____。 A: 5,-3,-2 B: 4,-3,-1 C: 4,-4,-2 D: 5,-4,-2