消费者不满意肯定就会转向别家,而满意却不一定保证就忠诚。
参考答案:对
Hearing the dog barking fiercely, away__________.
A.fleeing the burglar
B.was fleeing the burglar
C.the burglar was fleeing
D.fled the burglar
一个模数为2mm的直齿齿条,齿厚为()mm。
A.2
B.2π
C.π
D.4