测量器具对被测量变化的反应能力,即仪器指示变量与其相应的被测量之比称( ),也称放大比。
A.测量精度
B.测量误差
C.灵敏度
参考答案:C
— Did you see the beginning of the film?
— No. It ________ for 20 minutes when I got to the cinema. [ ]
A. has been on
B. had been on
C. had begun
D. has begun
( )可以进行社交技巧、自信心的训练、新角色的适应等。
A.拓展性小组
B.发展性小组
C.治疗性小组
D.支持性小组
E.预防性小组