有一组数据0.23、0.342和0.4,其和应为() A.0.92 B.0.92

题型:单项选择题

问题:

有一组数据0.23、0.342和0.4,其和应为()

A.0.92

B.0.922

C.0.9

D.1.0

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题型:单项选择题

正常成人心胸比率一般为()

A.0.5

B.0.56

C.0.55

D.0.60

E.0.40

题型:单项选择题

为减少多媒体数据所占存储空间而采用了: (3)

A.压缩/解压技术

B.存储缓冲技术

C.多通道技术

D.流水线技术

题型: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) .

38()

A.ever 

B.just 

C.almost 

D.never

题型:单项选择题

动脉血与静脉血可以从哪方面进行区分?[ ]

A.氧含量高低

B.是在动脉中还是在静脉中流动

C.营养物质的多少

D.无任何区别

题型:单项选择题

导轴承间隙应由有经验的两人测量,允许误差在()mm之内。

A.0.1;

B.0.05;

C.0.01;

D.0.5;

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