发布时间:2025-02-08 02:10:27
想要让红龙鱼更好的发色,首先要将其放到暗一点的环境中,最好三面都是黑色背景,然后用红灯进行诱色。平时则要注意水质,幼鱼时期可以频繁换水,借此来刺激它的新陈代谢,从而加速成长,成鱼换水就要慢一点了。另外,还要注意投喂的食物,用虾肉、蜈蚣等可以增色。
如图是某体育场看台台阶的一部分如果a点的坐标为00b点的坐标为11 1请建立适当的直角坐标
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