从行政体制类型划分来看，实行分离制的典型国家是( )。
A．瑞士
B．俄罗斯
C．中国
D．美国
参考答案：D
The film has been well received, but____actual sales, it hasn’t been very successful.
A．in terms of
B．in term of
C．come to terms with
D．come to term of
BY.2型逆变器其主振荡电路的反馈信号不是取自负载，而是由单独的（）定时电路供给。
A.LC
B.RC
C.RL
D.RLC
