物理随机接入信道PRACH,如果SF=16,则需要()条码分信道。
A.1
B.2
C.3
D.4
参考答案:B
A baby might show fear to an unfamiliar adult,______ he is likely to smile and reach out to another infant.
A.if
B.whenever
C.whereas
D.because
下列属李白的作品有()
A.《蜀道难》
B.《梦游天姥吟留别》
C.《行路难》(金樽清酒斗十千)
D.《将进酒》(君不见)