【单选题】【消耗次数：1】
圆柱的圆柱度公差带形状是（ ）。
①
半径差为公差值t的两个同心圆柱面之间所包含的区域；
②
直径差为公差值t的两个同心圆柱面之间所包含的区域；
③
半径为公差值t的圆柱面所包含的区域；
④
直径为公差值t的圆柱面所包含的区域
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