题目6单选题
当被测要素是直线时,其几何公差带的形状可以是A. <img src="https://tihai-oss-cloud.itihey.com/img/231e7160bba4a716c844341bea7b60c9.webp">B. <img src="https://tihai-oss-cloud.itihey.com/img/09228cc946fdc81232cda337071c8865.webp">C. <img src="https://tihai-oss-cloud.itihey.com/img/cfe5f48d5b26b9e3ed493588075485af.webp">D. <img src="https://tihai-oss-cloud.itihey.com/img/3faaf1f1da77a524408d594926f41056.webp">