发送者又称信源或(),是发送信息的一方。
参考答案:沟通者
All kinds of promotion activities were launched, for the May Holiday Market.
A.intended
B.intending
C.being intended
D.do intend
TSH测定采用血清样本,在哪种温度下可保存稳定5d
A.40℃
B.24℃
C.14℃
D.4℃
E.-4℃