TD网络规划时的链路预算的公式中基站的噪声系数NF一般取(),手机的NF一般取:
A.4,7
B.1,10
C.2,10
D.0,5
参考答案:A
Beijing has ______ many buses that there is often a traffic jam in rush hours.
A.so
B.very
C.too
D.much
“原发性骨肿瘤”最好发的部位
A.股骨、胫骨
B.胫骨、肱骨
C.脊柱、股骨
D.骨盆、颅骨
E.股骨、肱骨