特高压直流示范工程直流线路导线型号是()。
A.6×ACSR-720/50
B.8×ACSR-720/50
C.4×ACSR-720/50
D.其他三个选项都不是
参考答案:A
在完全竞争市场上,厂商短期均衡条件是()
A、P=AR;
B、P=MC;
C、P=MR;
D、P=AC。
The feeling of competition among the students in all the classrooms where the test was going on was noticeable to everyone.
A.discord
B.discovery
C.rivalry
D.cooperation