绝缘、护套厚度和外型尺寸测量中,通常测6点,数据结果应取()。
A、最大值
B、平均值
C、最小值
D、取中位数
参考答案:B
不等式2x+7<4x-5的解集是( )
A.x>2
B.x<2
C.x>6
D.x<6
The brothers look alike, but they differ widely __________each other _________their tastes. [ ]
A. from ; in
B. from; about
C. in; from
D. in;about