叠加原理适用于各种电路。
参考答案：错
以下属于混合监管体系的国家是（）。
A.日本
B.德国
C.加拿大
D.香港
E.瑞士
Even though I have been to her apartment several times before, I still don't remember ______ .
A．which building it is in
B．which the building is in
C．which is it in
D．which building is it in
