延髓外侧面() A.大脑前动脉供血 B.大脑后动脉供血 C.大脑中动脉供血 D.基底

题型:单项选择题

问题:

延髓外侧面()

A.大脑前动脉供血

B.大脑后动脉供血

C.大脑中动脉供血

D.基底动脉供血

E.椎动脉供血

考点:康复医学住院医师神经内外科神经内外科题库
题型:单项选择题

阅读理解。

    Skin-diving (潜泳) is a new sport today. This sport takes you into a wonderful new world. It is like a

visit to the moon! When you are under water, it is easy for you to climb big rocks, because you are no

longer heavy.

    Here, under water, everything is blue and green. During the day, there is plenty of light. When fish swim

nearby, you can catch them with your hands.

    When you have tanks (罐) of air on your back, you can stay in deep water for a long time. But you must

be careful when you dive in deep water.

    To catch fish is one of the most interesting parts of this sport. Besides, there are more uses for skin-diving.

You can clean ships without taking them out of the water. You can get many things from the deep sea.

    Now you see that skin-diving is both useful and interesting.

1. Skin-diving can take you to ______. [ ]

A. the moon

B. the mountains

C. a dirty world

D. an interesting and new world

2. This sport ______. [ ]

A. is like to travel on the moon

B. is like to play on water

C. is like to visit a new country

D. is like to climb a big rock

3. You can stay in deep water for a long time if ______. [ ]

A. you climb big rocks

B. you catch fish very easily

C. you bring something to eat

D. you take tanks of air with you

4. Which of the following statements is NOT true? [ ]

A. Skin-diving is a new sport.

B. Skin-diving is like visiting the moon.

C. The only use of skin-diving is to have more fun.

D. Skin-diving is not only interesting but useful.

5. Skin-diving is a interesting sport because ______. [ ]

A. you can catch fish with your hands

B. you can clean the ship in the water

C. you can get many things from the deep sea

D. all of the above

题型:单项选择题

有关无色素性痣的叙述,下述不正确的是()

A.是一种非痣细胞痣

B.是一种发生学上的畸形

C.是一种持续不退的疾病

D.是一种易发癌变的疾病

E.是一种不完全性色素脱失性疾病

题型:单项选择题

政府决策的法定化是指包括()等依法决策机制的建立和完善。

A、合法性审查

B、风险评估

C、专家论证

D、公众参与

题型:单项选择题

高速道岔具有什么特点?

题型:单项选择题

网络解决方案如图2所示,该网络原先使用的使国外品牌的交换机,随着网络规模的扩大,增添了部分国产的交换机,交换机1~5均是国产10M/100Mbit/s自适应交换机,交换机 6和交换机7是第3层交换机。

该网络在运营过程中曾出现下列故障:

故障1:

使用“网络故障一点通”测试新建密集小区用户和三层交换机6之间的最大吞吐量,发现这些用户带宽都不超过10Mbit/s。

使用“在线型网络万用表”串联在三层交换机6和交换机4之间,测试数秒钟后,发现它们之间的传输速率也是10Mbit/s。

故障2:

故障现象:VIP小区用户不能上网,但能Ping通路由器地址。

分析:由于VIP小区用户配置的是静态IP地址,而且处在同一网段,共用路由器上的一个地址作为网关地址。用户能Ping通路由器,说明从用户到路由器间的路径是通的,因此需重点检查路由器。

操作过程如下:

首先,在路由器上,观察接口状态,未见异常。

然后,用 (1) 命令观察路由表,未见异常。

最后,再用 (2) 观察地址解析协议表,发现路由器的MAC地址与工作人员以前保存在该表中的MAC地址不同,是VIP小区中某个用户的MAC地址。

1.将故障2中(1)和(2)两处合适的命令填入答题纸相应的解答栏内。

2.故障2如何解决?

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