物联网体系架构中,网络层相当于人的()。
A.皮肤
B.五官
C.神经中枢
D.大脑
参考答案:C, D
根据句义和首字母完成下列单词。
1. I'm thirteen years o .
2. Jenny has a h family.
3. She'll come to my party t .
4. They are m dumplings.
5. The picture is a the bed.
6. I talked on the t with her.
选色时应首先确定
A.彩度
B.半透明区的分布及程度
C.个性特征
D.明度
E.色调