WTZJ-II型CIR送受话器元件D1的型号是()。
A、LM258
B、LM386
C、LM7805
D、LM7809
参考答案:B
-Where did you make your first appointment with Harry?
-It was in the Disneyland Park in Hong Kong he served as a department manager.
A.that
B.which
C.from which
D.where
下列关于建筑物综合布线系统的描述中,错误的是( )。
A.采用模块化结构
B.具有良好的可扩展性
C.传输介质采用屏蔽双绞线
D.可以连接建筑物中的各种网络设备