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一台精度为0.5级的电桥，下限刻度为负值，为全量程的25％，该表允许绝对误差是1℃，试求该表刻度的上下限.

答案

参考答案：

量程为1℃／O.005＝200℃，下限值为一（200℃×25％）＝一50℃，该表刻度上下限为一50一150℃.

单项选择题 A1型题

肋骨骨折治疗原则除外（）

A.止痛

B.清理呼吸道分泌物

C.固定胸廓

D.防止并发症

E.立即急诊手术治疗
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单项选择题

It was a very hot day in the middle of summer, and there were no trees along the street. Mr. Read (41) his shop at half past five, and went out into the street and began walking to the bus. He was a very (42) man. The sun shone straight down the street, and in a few minutes Mr. Read (43) very hot.

A. thought B. felt C. said

A small boy came out of another (44) in the street and followed Mr. Read. He stayed very (45) him all the time, and he kicked Mr. Read’s (46) several times. Mr. Read looked at him angrily each time.After the fourth time, Mr. Read stopped, turned (47) and said to the small boy, "What are you doing (48) following me like that! You’re going to hurt my feet."
"I’m (49) , but don’t stop me, please!" the small boy said. "It’s very hot today, and there isn’t (50) shade anywhere else in the street!\
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