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问题 单项选择题

（）指根据动、静态检测结果及线路状态变化情况，进行有计划、有重点的经常性修理，以保持线路质量经常处于均衡状态。成段保养以大型养路机械为主要作业手段。

A.综合维修

B.经常保养

C.临时补修

D.紧急抢修

答案

参考答案：B

单项选择题

男性，77岁，不慎跌倒时以手掌撑地，造成Colles骨折。

手法复位纠正该畸形时，应将骨折远端()。

A．向手背侧挤压

B．向手掌侧挤压

C．向手臂桡侧挤压

D．向手臂尺侧挤压

E．轻柔旋转复位
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单项选择题

In June 1985, two British mountaineers Joe Simpson and Simon Yates made the first-ever climb of the 21,000-foot snow-covered Siula Grande mountain in Peru. It was an exceptionally (26) job, but nothing compared to what was to (27) . Early in the process, Simpson (28) and broke his right knee. Yates could have (29) him but managed to find a way of (30) him down the mountains on a rope in a series of difficult drops. Then Simpson fell into a crevasse and Yates eventually had no (31) but to cut the (32) , completely convinced that his friend was now (33)

In his book on the (34) , Joe Simpson wrote:

(35) I looked at the distant moraines, I know that I must at least try I would probably (36) there among those rocks. If I died, well, that wasn’t so (37) , but I wouldn’t have (38) waited for it to happen. The (39) of dying no longer affected me as it had in the crevasse at first. I now had a chance to (40) it and struggle against it.

The survival of Yates himself was (41) . That Simpson somehow found a way of (42) out of the crevasse after 12 hours and then crawled and (43) himself six miles back to camp, (44) three days and might without food or drink, would be considered as a heroic fiction. But in fact it was so (45) .

29().

A. helped

B. saved

C. pulled

D. abandoned
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