精密划线加工出来的孔,其孔距精度一般控制在()mm以内
A、0.03
B、0.05
C、0.07
D、0.1
参考答案:D
Foreign Minister of China used plain language to make the Chinese foreign policy ________ to the
whole world at the press meeting last week.[ ]
A. get through
B. get across
C. get over
D. get around
什么是显著性差异分析法?