【问题4】 要求对划分后的某个子网再划分两个子网,请求其出子网掩码。

题型:问答题

问题:

【问题4】
要求对划分后的某个子网再划分两个子网,请求其出子网掩码。

考点:计算机软件水平考试中级网络工程师中级网络工程师下午试题
题型:问答题

阅读短文,选择正确答案。

     A small man with a fat stomach got on the train at the last station before the frontier (边境). He carried a

paper bag. And four feet of ducks (鸭子) could be seen under the cover. The man found an empty seat, put the

bag in the middle of the floor, took out a newspaper and began to read.

     Then a policeman came in. Of course he saw the bag with the ducks' feet at once and said, "Whose is that

bag?"

     Nobody answered. The policeman repeated the question, and said, "I shall have to take it away from the

owner. Food mustn't be taken out of country."

     "Well, then," said the small man with a fat stomach. "Hurry up and take it away. We want to go home." The

policeman took the bag and went on to the next carriage (车厢).

     At the next station, when they were safely across the frontier, the small man got up, smiled at other

passengers and said, "I hope that they'll enjoy the ducks' feet. The rest of the bag had nothing but rubbish in it."

Then he opened his coat and pointed to another bag he was carrying under it. It was tied over the stomach,

which was not really fat. "I have the rest of the two ducks here," he said. With these words, he got off the train.

     But while he was happily walking to the exit with the bag in his hand, a policeman came up to him, saying,

"Hey, man! Foreign food mustn't be brought in."

1. The small man put the bag in the middle of the floor _______. [ ]

A. because the other passengers didn't like it

B. so that the policeman could find it easily

C. so that he could make more room for himself

D. because there was not an empty seat in the carriage

2. Why did the first policeman take the paper bag away? Because _____. [ ]

A. he wanted to find the owner of the bag

B. he enjoyed the ducks' feet in the bag

C. the bag was put in a wrong place in the carriage

D. food can't be taken abroad

3. The bag the policeman took away had nothing in it except _______.[ ]

A. two ducks

B. rubbish

C. the ducks' feet and rubbish

D. the ducks' feet

4. How many ducks are there in the passage? [ ]

A. 2.

B. 4.

C. 6.

D. We don't know.

5. What happened in the end? The small man _______. [ ]

A. failed to take his food home

B. crossed the frontier with two paper bags

C. took the ducks safely home

D. hid his ducks under his coat again

题型:问答题

关于控制性降压下述哪项是正确的是()

A.在满足手术的前提下,尽可能维持较低的血压

B.健康病人收缩压80~90mmHg不宜超过20分钟

C.老年或高血压患者的降压幅度不超过术前值的10%~20%

D.老年人或高血压患者保持收缩压值在术前舒张压水平是安全的

E.降压幅度应以数值或术野出血情况为目标

题型:问答题

下列现象中质量发生变化的是    (    )

A.铁水凝固成铁块

B.将一块矿石由地球运到太空

C.菜刀被磨光以后

D.将铁丝用拔丝机拉长

题型:问答题

有两个无标签的试剂瓶,分别装有Na2 CO3和 NaHCO3,有四位同学为鉴别它们采用以下不同方法,其中可行的是 [ ]

A.分别将它们配制成溶液,再加入澄清石灰水

B.分别将它们配制成溶液,再加入NaOH溶液

C.将它们配制成溶液,再分别加到盐酸中

D.分别加热,再用石灰水检验是否有CO2产生

题型:问答题

下列安全事故的主要诱因中属于人的不安全行为的是( )。

A.身体缺陷

B.作业场所缺陷

C.错误行为

D.违纪违章

E.物质与环境的危险源

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