高阻接地短路：短路相位角小于（）度，短路电流小于1000A，短路电压在10000V左右。
A.10
B.15
C.20
D.30
参考答案：A
—I missed the beginning of ________musical programme The Voice of China.
—What a pity! You should leave school half _______ hour earlier.
A．a, an
B．the, a
C．the, an
D．an, the
高处坠落伤，鼻出血，最可能是()
A.颅前窝骨折
B.颅盖骨骨折
C.颞骨骨折
D.颅后窝骨折
E.颅中窝骨折
