下列能源中,属于新能源的是 [ ]
A.电能
B.煤和石油
C.潮汐能
D.木炭
答案:C
The goods which pass through the territory by land is defined as ().
A. transit goods
B. transshipment goods
C. through goods
D. import and export goods
两台单相电压互感器接成V-V型测量三相线电压,三台电压互感器接成Y,y0型测量三相线电压的接线图是()。
A.
B.
C.
D.