My bike is Lucy's.[ ]
A. as better as
B. as good as
C. as well as
D. as best as
答案:B
阳阳家的一袋米发霉了,妈妈觉得继续食用不安全,决定倒掉.______.
下列对离心泵的参数说法中错误的是()。
A、扬程的国际单位是米
B、质量流量的国际单位是吨每小时
C、泵效率没有单位
D、转速的单位是转每分