经营者违反《反不正当竞争法》的规定,根据情节,处以违法所得1倍以上3倍以下的罚款或者( )万元的罚款。
A.1~3
B.5~10
C.10~20
D.1~20
参考答案:D
I feel that one of my main duties ______ a teacher is to help the students to become better learners. [ ]
A. for
B. by
C. as
D. with
一级文艺演出类扩声系统声学特性指标传声增益为()。
A.100~8000Hz的平均值大于或等于-8dB
B.100~8000Hz的平均值大于或等于-12dB
C.125~6300Hz的平均值大于或等于-8dB
D.125~6300Hz的平均值大于或等于-12dB