Gigabit Ethernet的每个比特的发送时间为______。

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问题:

Gigabit Ethernet的每个比特的发送时间为______。

考点:计算机等级考试网络技术三级网络技术笔试
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绘画,笔墨不必过周,以拙为巧,以空为灵,含不尽之意于画外, 更见幽远。

A.画意

B.境界

C.意象

D.诗情

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阅读理解

     Honey from the African forest is not only a kind of natural sugar, it is also delicious.

     Most people, and many animals, like eating it. However, the only way for them to get that

honey is to find a wild bees' nest and take the honey from it. Often, these nests are high up in

trees, and it is difficult to find them. In parts of Africa, though, people and animals looking for

honey have a strange and unexpected helper - a little bird called a honey guide.

      The honey guide does not actually like honey, but it does like the wax in the beehives (蜂房).

The little bird cannot reach this wax, which is deep inside the bees' nest. So, when it finds a suitable

nest, it looks for someone to help it. The honey guide gives a loud cry that attracts the attention of

both passing animals and people. Once it has their attention, it flies through the forest, waiting from

time to time for the curious animal or person as it leads them to the nest. When they finally arrive at

the nest, the follower reaches in to get at the delicious honey as the bird patiently waits and watches.

Some of the honey, and the wax, always falls to the ground, and this is when the honey guide takes

its share.

     Scientists do not know why the honey guide likes eating the wax, but it is very determined in its

efforts to get it. The birds seem to be able to smell wax from a long distance away. They will quickly

arrive whenever a beekeeper is taking honey from his beehives, and will even enter churches when

beeswax candles are being lit.

1. Why is it difficult to find a wild bees' nest?

A. It's small in size.

B. It's hidden in trees.

C. It's covered with wax.

D. It's hard to recognize.

2. What do the words "the follower" in Paragraph 2 refer to?

A. A bee.

B. A bird.

C. A honey seeker.

D. A beekeeper.

3. The honey guide is special in the way              .

A. it gets its food

B. it goes to church

C. it sings in the forest

D. it reaches into bees' nests

4. What can be the best title for the text?

A. Wild Bees

B. Wax and Honey

C. Beekeeping in Africa

D. Honey-Lover's Helper

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上唇及鼻根部炎症,若处理不当可使菌血栓逆流入颅面导致海绵窦化脓性血栓性静脉炎,下列其可能的逆流途径中哪个是错的?()

A.面前V-面深V-翼丛-卵圆孔网-海绵窦

B.面前V-面深V-翼丛-眼下V-眼上V-海绵窦

C.面前V-面深V-翼丛-破裂孔导血管-海绵窦

D.面前V-内眦V-眼上V-海绵窦

E.面前V-面深V-翼丛-颌内V-脑膜中V-海绵窦

题型:填空题

以下不是"0.022"托槽优点的是().

A.托槽更小,患者更舒适

B.弓丝选择较多

C.治疗早期保持轻力

D.更适用于滑动法关闭拔牙间隙

E.与镍钛方丝配合,可使转矩充分表达而保持温和的力

题型:填空题

汽包锅炉强制冷却的基本原则有那些?

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