FEC方式通信中,保证BRS与BSS之间同步的定相信号是()
A、0/1点阵信号
B、RQ/a
C、RQ
D、a
参考答案:B
用所给词的适当形式填空
1. Look! This is _____ (Jim) family.
2. There are four _____ (people) in my family.
3. Betty _____ (have) got a sister.
4. They _____ (not have) got any apples.
5. My family _____ (be) at home in the evening.
6. _____(they) books are on the desk.
7. I have got one aunt and three _____(uncle).
8. _____ (have) your father got a brother?
9. Tom is in Class One with Linda and _____ (I).
10. I have got a sister. _____(she) name is Lucy.
QHSE的实现对()的满意和信任度产生积极影响。
A.顾客
B.员工
C.社会
D.相关方