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问题 单项选择题

A类网络地址为36.0.0.0，若借主机号的8个二进制位作为子网地址时，它的子网掩码是

A．255.0.0.0

B．255.255.0.0

C．255.255.255.0

D．255.255.0.255

答案

参考答案：B

解析： 题中36.0.0.0属于A类地址，则网络号的长度占8位，主机号长度占24位。若借主机号的8个二进制位作为子网地址，则网络地址扩展为16位，子网掩码应为255.255.0.0。

填空题

填空，每空一词。

Dear Jennifer,

     It's Tuesday, November 11. I am (1)             (2)             today! At 8 o'clock I (3)             math. I

don't (4)              math. Then (5)             9:00 I have science. It's (6)             , but interesting. Next,

at 10:00, I have history. It's boring but useful. But at 11:00 I have P.E. That's my (7)              subject!

I (8)             lunch at 12:00. After lunch, I (9)             music. Music is (10)            . I like my music

teacher, Mr. Morgan. He's fun. All my classes (11)             at 2:00. After class I have gymnastics

(12)             two hours. Our teacher is very (13)             and he makes me very (14)            . But

after (15)             I have Chinese (16)             club. It's (17)             interesting

                                                                                                                                          Love,

                                                                                                                                          Jane

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单项选择题

技术咨询合同委托人按受托人符合约定要求咨询报告作出决策造成损失由( )承担。

A．受托人
B．委托人
C．双方
D．咨询机构
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