什么是测量仪器基值误差？
参考答案：
测量仪器的基值误差是指为核查仪器而选甩在规定的示值或规定的被测量值处的测量仪器误差。
You had better ____________ because you have to drive back home.
A．not drinking
B．not drink
C．don’t drink
D．not to drink
— Michael was late for Mr. Smith's oral class this morning.
— How come? ________ I know, he never came late to class. [ ]
A. As far as
B. So far
C. By far
D. As far
