题目内容

当使用时间到达租约期的一半时，DHCP客户端向DHCP服务器______要求更新租用期。

A. 单播一个DHCP request报文
B. 广播一个DHCP discover报文
C. 组播一个DHCP decline报文
D. 泛播一个DHCP offer报文

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The boys are playing in the river in the raw. "In the raw" in this sentence means ______.

A. naked
B. robe
C. shorts
D. vest

中国人民保险公司在指明货物加费费率表中对某些易损货物规定了______

A. 相对免赔率
B. 绝对免赔率
C. 相对免赔额
D. 赔偿比率

More often than not, functional words mainly have ______.

A. lexical meaning
B. associative meaning
C. collocative meaning
D. grammatical meaning

______ are those that cannot occur as separate words without being added to other morphemes.

A. Free roots
B. Free morphemes
C. Bound morphemes
D. Meaningful units