下列①草 ②煮熟的鱼 ③珊瑚 ④钟乳石 ⑤冬眠的蛇 ⑥恐龙化石 ⑦蘑菇 ⑧家鸽,

题型:选择题

问题:

下列①草 ②煮熟的鱼 ③珊瑚 ④钟乳石 ⑤冬眠的蛇 ⑥恐龙化石 ⑦蘑菇 ⑧家鸽,其中属于生物的是 [ ]

A.①⑤⑦⑧

B.①③④⑧

C.②③④⑥

D.②⑤⑥⑦

考点:生物及其特征
题型:选择题

(56) is a one-way function that takes an arbitrarily long piece of plaintext and from it computes a fixed-length bit string.
(57) is a protocol that most USENET machines now use it to allow news articles to propagate from one machine to another over a reliable connection.
(58) is an approach preferred by cable TV providers. In this solution the fiber terminates at an opto-electrical converter and the final segment is a shared coaxial cable.
(59) is a device used to connect two separate network that use different communication protocol.
(60) is a digital-to-digital polar encoding method in which the signal level is always either positive or negative.

A.NNI

B.NRZ

C.NAK

D.NVT

题型:选择题

Once there was a little girl who came to live in an orphanage (孤儿院). As Christmas time was drawing near, all of the other children 11 telling the little girl about the beautiful Christmas tree that would appear in the hall downstairs on Christmas morning. After their usual 12 , each child would be given their only Christmas gift, a small orange.

The headmaster of the orphanage was very 13 with the kids. So on Christmas Eve, when he 14 the little girl slipping down the stairs to peek(偷看)at the much-heard-of Christmas tree, he 15 that the little girl would not receive her Christmas orange because she had been so curious as to disobey the rules. The little girl ran back to her room 16 , crying at her terrible fate. The next morning as the other children were going down for breakfast, the little girl stayed in her bed. She couldn’t 17 the thought of seeing the others receive their gift while there would be 18 for her. Later, as the children came back upstairs, the little girl was surprised to be handed a napkin (餐巾). As she carefully opened it, there, to her 19 , was an orange all peeled and sectioned (分瓣). “ How could this be? ” she asked. Then, she realized how each child had taken one section from their orange for her so that she, too , would have a Christmas orange. What an example of the true meaning of Christmas those orphan children showed that morning! How I 20 the world would show the same kind of concern for others, not only at Christmas, but throughout the year!

请在11处填上正确答案()

A.stopped

B.began

C.hated

D.avoided

题型:选择题

某企业甲、乙两个投资的初始投资额分别为100万元和200万元,项目有效期分别为3年和6年,每年现金净流量分别为50万元和70万元。假设两个投资项目均在投资当年一次投放完工并产生经济效益,项目结束时均无残值。

根据上述资料,回答下列问题:

甲、乙方案的投资回收期为()。

A.甲4年

B.甲2年

C.乙3.94年

D.乙2.86年

题型:选择题

呃逆证见:呃声洪亮有力,口臭烦渴,多喜冷饮,脘腹满闷,大便秘结,小便短赤,舌苔黄燥,脉滑数。可辨证为哪一型()

A.胃寒气逆

B.胃火上逆

C.气滞痰阻

D.脾胃阳虚

E.胃阴不足

题型:选择题

粉尘爆炸的能量来自于()。

A、颗粒的大小

B、热传导

C、空气混合物的浓度

D、热辐射

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