【单选题】【消耗次数：1】
对象捕捉模式有（? ）。
①
运行捕捉模式和自动捕捉模式
②
自动捕捉模式?
③
临时捕捉模式和覆盖捕捉模式?
④
自动捕捉模式与临时捕捉模式?
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【多选题】
“在执行“交点”捕捉模式时，可捕捉到（）
①
捕捉(三维实体)的边或角点
②
可以捕捉面域的边
③
可以捕捉曲线的边
④
圆弧、圆、椭圆、椭圆弧、直线、多线、多段线、射线、样条曲线或构造线等对象之间的交点。
【单选题】
以下有关AutoCAD中“捕捉模式”(SNAP)和“栅格模式”（GRID）的叙述正确的是（）
①
栅格的纵横间距必须相等
②
SNAP的纵横间距必须相等
③
只有显示栅格式打开SNAP才能捕捉到栅格点
④
当栅格的间距与SNAP的间距对应相等，SNAP总是捕捉栅格点
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