机组在机房内的位置,周边除散热水箱一端外,与机房墙体的距离均应不小于(),以利操作、维护管理及维修。
A、0.5m
B、1m
C、1.5m
D、2m
参考答案:C
He left ________with my secretary that he would call again in the afternoon and he did keep his ________.
A.words; words
B.word; words
C.word; word
D.the word; words
灭菌法