纵联保护电力载波通道中,()是由电感线圈和可调电容组成的并联谐振回路。
A.高频阻波器
B.耦合电容回路
C.结合滤波回路
D.保护间隙
参考答案:A
Then I got up slowly, looking at ______ moon, and lost in ______ thought, which made me sad.
A.the; \
B.\; the
C.the; the
D.\; \
下列程序的循环次数是______。x=2;do{x=x*x;}while(!x);