李师傅生产了200个齿轮,个个合格,合格率是200%.______.
200200×100%=100%,
故答案为:错误.
Tom's _____ towards guests really makes me feel embarrassed in the party. [ ]
A. advantage
B. ability
C. activity
D. attitude
()适用于小型独立的工作小组,部门或办公室。
A.独立式交换机
B.堆叠式交换机
C.模块化交换机
D.以上都是