问题
单项选择题
扩声系统的交流电源容量一般为终期扩声设备耗电容量的( )倍。
A.1.0~1.5.
B.1.5~2.
C.1.0~2.5.
D.15~3
答案
参考答案:B
扩声系统的交流电源容量一般为终期扩声设备耗电容量的( )倍。
A.1.0~1.5.
B.1.5~2.
C.1.0~2.5.
D.15~3
参考答案:B
选用方框里的单词或词组填空,其中有一个单词或词组是多余的,共5 分
小题1: Be careful friends with bad boys. 小题2:How they are talking over there! 小题3:It was terrible that earthquake Yaan in Sichuan on April 20,2013. 小题4:This story is one that I have ever heard of. 小题5:The rice in South China tastes good. |