IP协议对应于OSI七层参考模型中的第()层。A.5 B.3 C.2 D.1

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问题:

IP协议对应于OSI七层参考模型中的第()层。

A.5

B.3

C.2

D.1

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通过不同方式进入人体的药物,在体内有不同的代谢方式和代谢途径,多数药物经过肝的生化转化后,其活性和水溶性发生变化,同时可经过胆管或肾排出体外。

口服及肌内注射均吸收慢、不完全且不规则,剂量与血药浓度间无可靠相关性的是()

A.地高辛

B.苯妥英钠

C.环孢素A

D.阿米卡星

E.阿米替林

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东晋南朝时期,江南经济发展迅速,而北方经济日益落后。导致这一变化的客观因素是()

A.江南生产工具和生产经验比北方强

B.南方人比北方人勤劳

C.北方社会动荡,南方相对安定

D.先秦以来,南方的自然条件优于北方

题型:单项选择题

功能凉血活血,解毒透疹的药物是()

A.射干

B.鱼腥草

C.紫草

D.苦参

E.蒲公英

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下列哪种格式的图片不能用来输出()。

A、JPG

B、TIFF

C、EPS

D、GIF

题型:单项选择题

Recently, I flew to Las Vegas to attend a meeting. As we were about to arrive, the pilot announced with apology that there would be a slight (16) before setting down. High desert winds had (17) the airport to close all but one runway. He said that we would be (18) the city for a few minutes waiting to (19) . We were also told to remain in our seats meanwhile with our seat belts fastened (20) there might be a few bumps(颠簸). Well, that few minutes turned into about four-five minutes, including a ride that would make a roller coaster(过山车) (21) by comparison. The movement was so fierce that several passengers felt (22) and had to use airsickness bags. As you might guess, that’ s not a good thing to have happen in a(n) (23) space because it only (24) to increase the discomfort of the situation.
About twenty minutes into the adventure, the entire airplane became very (25) There was now a sense of anxiety and fear that could be (26) noticed. Every passenger simply held on for dear life …except one. A (27) was having a good time! With each bump of the (28) , he would let out a giggle (咯咯地笑)of delight. As I observed this, I (29) that he didn’t know he was supposed to be afraid and worried about his (30) . He neither thought about the past nor about the future. Those are what we gown--ups have learned from (31) . He was (32) the ride because he had not yet been taught to fear it. Having understood this, I took a deep breath and (33) back into my seat, pretending I was (34) on a roller coaster. I smiled for the rest of the flight. I even (35) to giggle once or twice, much to the chagrin(随恼) of the man sitting next to me holding the airsickness bag.

How did Jeb try to hold the cougar’ s attention

A.By keeping shouting and hitting.

B.By making a wall out of his arms.

C.By throwing himself on the cougar.

D.By swinging his fists at the cougar’ s eyes.

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