问题
单项选择题
常用的像质计是()。
A.槽式像质计
B.线形像质计
C.孔形像质计
D.以上都是
答案
参考答案:D
常用的像质计是()。
A.槽式像质计
B.线形像质计
C.孔形像质计
D.以上都是
参考答案:D
选词填空。 | |
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