如图所示一平衡的空间平行力系，各力作用线与z轴平行，下列方程组哪些可以作为该力系的平衡方程组。[img=225x193]17afaa83530ab12.png[/img] 未知类型：{'options': ['[tex=16.5x2.0]dEiM6sjh4I/dLjwFlRQR64VZiy5edKdj7qdiWzZ/ww9oiFLiyLyFDs1g0TDUM+JnODRgX+IfAyBytgYelWVqVg==[/tex]', '[tex=16.429x2.0]dEiM6sjh4I/dLjwFlRQR64VZiy5edKdj7qdiWzZ/ww9oiFLiyLyFDs1g0TDUM+JnQbO363cj76TaffvVI+UTsQ==[/tex]', '[tex=18.214x2.0]/BA/zir9nkLqj+SkRt7t0+mZplbraSPj3VuGnGyD62zomEkXuNhTp5PUJRc8orceYPkRa/27XZfIwGC440myyg==[/tex]', '[tex=21.571x1.357]Wjp/RG/BKMJKqbpxWptIQNZtWlhqtuLM867+vH0cNWs2SjZjwD0QlCDHmyM925rsJAbKiRKkGEp2tWDUCMFTKKdiZkiUbB4soZ8NBRbnbhc=[/tex]'], 'type': 102}