单选题
确保孔的直径小于规定的值。
A
A.Ensure that the porosity is less than the specified error.
B
B.Ensure that the depth of the hole conforms to the specified value.
C
C.Make sure that the diameter of the hole is less than the specified value.
答案解析
正确答案:C
相关知识点:
确保孔直径,diameter是直径
