调校用标准仪表的基本误差的绝对值，不宜超过被校仪表基本误差绝对值的（）。P80
A.最小值
B.1/4
C.1/3
D.1/2
参考答案：C
用3个棱长是2厘米的正方体拼成一个长方体，这个长方体的棱长总和是[ ]
A.32
B.40
C.56
--- Daming didn’t finish his homework yesterday.
----_________________.
A．So did I
B．Neither did I
C．So I did
D．Neither I did
