氯乙烯的沸点随着压力升高,其沸点相应()
A、升高
B、不变
C、降低
D、没关系
E、提高
参考答案:A, E
All the task ______ ahead of time, they decided to go on holiday for a week.
A.had been finished
B.were finished
C.having been finished
D.been finished
12.2KAMR语音业务对应的上下行扩频因子分别是:()
A、上行128,下行128
B、上行64,下行128
C、上行128,下行256