【简答题】이틀 묵고 모레 아침에 __ ________ ( 退房 ) 려고 합니다 .
【单选题】黑色素细胞中, ()可经酪氨酸酶等催化合成黑色素
【判断题】保险既是一种经济制度,又是一种法律关系。
【单选题】He is a good friend of().
【简答题】Lie in bed, by an open window, and listen… “No air conditioning? How can you sleep?” a friend asks, horrified. I tell her my family has decided to shut the air conditioner off and reduce our electric ...
【单选题】I can’t meet you on Sunday. I’ll be ________ occupied.
【简答题】In our life many people are important to us, such as our parents, teachers and friends. Then when you are not _ 1__ , who do you often go to, your parents, teachers or friends? Many students may answe...
【多选题】以下有关IP地址的说法正确的是( )
A.
IP地址的分配和回收是统一管理的,其管理方式是层次式的
B.
目前常用的1P地址有A类、B类、C类、D类和E类
C.
相对于其他类型的地址,使用A类地址的网络拥有最多的主机号
D.
IP地址属于稀缺资源,因此当前正在大力发展IPv4