问题
单项选择题
在给定地区或给定组织内,通常具有最高计量学特性的测量标准,称为(),在该处所做的测量均从它导出。
A.参考标准
B.工作标准
C.核查标准
D.传递标准
答案
参考答案:A
在给定地区或给定组织内,通常具有最高计量学特性的测量标准,称为(),在该处所做的测量均从它导出。
A.参考标准
B.工作标准
C.核查标准
D.传递标准
参考答案:A
选用方框中适当的句子完成对话 | |
Tom: Is it a picture of your family? Mary: (1)_____ Tom: Oh, you have a big family. Who are they? Mary: (2)_____ Tom: Is this man your uncle? Mary: (3)_____ Tom: What's his name? Mary: (4)_____ Tom: Who's this woman? Is she your aunt? Mary: (5)_____ Tom: Who are those three children? Mary: They are my sister, brother and me. |