给定的IP地址为192.55.12.120,子网掩码是255.255.255.240

题型:单项选择题

问题:

给定的IP地址为192.55.12.120,子网掩码是255.255.255.240,那么网号是______,主机号是______,直播的广播地址是______。如果主机地址的头10位用于子网,那么184.231.138.239的子网掩码是______。如果子网掩码是255.255.192.0,那么下面主机______必须通过路由器才能与主机129.23.144.16通信。

A.0.0.0.112
B.0.0.0.120
C.0.0.12.120
D.0.0.12.0

考点:计算机软件水平考试中级多媒体应用设计师多媒体应用设计师上午试题2
题型:单项选择题

某溶液A只含有NH4+、Na+、Mg2+、Al3+、CO32-、SO42-中的几种,若取A溶液加入Na2O2粉末,有无色无味的气体放出,并生成白色沉淀,加入Na2O2的量为X,生成沉淀的量为Y,则有如右图所示关系,可知:

            

(1)A中一定有__________离子                                   

(2 ) A中一定没有___________离子  

(3 ) A中可能有_____________离子   

题型:单项选择题

创伤后,下列哪些物质分泌能促使脂肪分解()

A.儿茶酚胺

B.肾上腺皮质激素

C.胰高血糖素

D.胰岛素

E.前列腺素

题型:单项选择题

阅读理解

     The morning for our snowmobiling (雪上汽车) adventure finally arrived, and we set off on the

hourandahalf drive to the resort.A fresh powder had fallen the night before, and everything was

frosted white.We couldn't have asked for more perfect conditions.The sun sparkled (闪光) on the

snow, and the trails (路线) were completely empty-not another person or snowmobile in sight.We

were thrilled at being the only people for miles around...until we got going.  

     As we drove through the deserted wilderness (荒野), my excitement became stonecold fear.I had

no idea what I was afraid of, or why I was afraid, but suddenly every turn, every hill, every steep (陡

峭的) side of the mountain scared me to death.I kept picturing us crashing headlong into a tree or falling

off the side of a drop.    

     But after lunch things changed.We were the only humans who had been there since the snowfall.The

peaceful place, the incredible beauty of the landscape, and the almost sacred experience of sharing a

mountain with the wildlife touched my very core (核心). My mind cleared and quieted and my muscles

relaxed.  

     As we drove the last leg of the run, I began to resent being afraid to drive.Deep down, I wanted to

be in charge of the thing that scared me.It made me angry that fear was keeping me from something I

really wanted to do.The day was coming to an end, and the resort was only a few miles away.I knew

that if I didn't take my chance now, I would regret it.  

     I signaled to my husband to pull over.I wanted to drive, although my heart pounded (重击). I stared

off slowly and felt the wind in my face.I smiled and sped up a little.I let out a "Yeehaw!" and went full out,

taking my husband on the best ride of the day.  

     We ended the day on that breathless, carefree, and I felt proud of myself-proud of overcoming my

fear.

1. What is the story mainly about?

A. What the author loves about snowmobiling.  

B. What difficulties the couple faced during their adventure.  

C. What interested the author during her time snowmobiling. 

D. How the author overcame her fear during her adventure.

2. What can be concluded from the article?

A. The author was confident as she was driving in the deserted wilderness.  

B. The author didn't get worried until they started to drive through the deserted wild.  

C. Aware that she and her husband were the only people around, the author became anxious.  

D. The author was so nervous that she almost crashed into a big tree.

3. According to the article, after lunch the author ________.  

A. gradually calmed down  

B. stopped to enjoy the beautiful scenery

C. saw some wildlife on the mountain  

D. was afraid to continue her journey

4. The underlined word "resent" in Paragraph 4 is closest in meaning to ________.

  

A. consider      

B. appreciate    

C. hate        

D. recognize

5. What message does the story convey?

A. A person's biggest enemy is his or her inner self.  

B. It's no use crying over the spilt milk.  

C. Take time to enjoy the beauty of nature.  

D. Respect and take pride in yourself.

题型:单项选择题

下列哪种情况,航空器活动区机动车驾驶员将被记12分,收回驾驶证,两年内不得再申领驾驶证:()

A.碰撞航空器的

B.造成交通事故致人轻伤以上或财产损失2000元以上的;

C.与航空器抢行造成航空器刹车的;

D.酒后驾驶车辆的。

题型:单项选择题

下列哪种疾病可引起局部水肿()

A.肝硬化

B.丝虫病

C.右心衰竭

D.营养不良

E.肾病综合征

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