井架底座总装后，四条大腿的和尚头水平高差不大于（），底座对角线的长度偏差小于5mm。
A.5mm
B.8mm
C.3mm
D.l0mm
参考答案：C
People today make choices of their diets______ what they believe.
A．based on
B．basing on
C．are based on
D．being based on
被称为"阴脉之海"的是（）
A.任脉
B.冲脉
C.督脉
D.带脉
E.阳维脉
