血平板上菌落的溶血现象,不包括
A.α溶血
B.β溶血
C.ζ溶血
D.γ溶血
E.双环
参考答案:C
The modern plane is not the machine _____ it was when first invented.
A.than
B.as
C.that
D.what
金属材料堆放,距地面应大于()mm。