更多“低碳钢零件常采用表面淬火强化表面”相关的问题
全身情况很差或合并急性肠梗阻的直肠癌病人适用的手术是（）
A.经肛局部切除术
B.Miles手术
C.Dixon手术
D.Hartmann手术
E.拖出吻合术
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Wild camping is always permitted in many places.（）
Camping
Camping wild is a wonderful way to experience the natural world and， at its best， it makes little environmental influence. But with increasing numbers of people wanting to escape into the wilderness， it is becoming more and more important to camp unobtrusively （不引人注目地） and leave no mark.
Wild camping is not permitted in many places， particularly in crowded lowland Britain. Wherever you are， find out about organizations responsible for managing wild spaces， and contact them to find out their policy on camping and shelter building. For example， it is fine to camp wild in remote parts of Scotland， but in England you must ask the landowner's permission， except in national parks.
Camping is about having relaxation， sleeping outdoors， experiencing bad weather， and making do without modern conveniences. A busy， fully-equipped campsite （野营地） seems to go against this， so seek out smaller， more remote places with easy access to open spaces and perhaps beaches. Better still， find a campsite with no road access： walking in makes a real adventure.
Finding the right spot to camp is the first step to guaranteeing a good night's sleep. Choose a campsite with privacy and minimum influence on others and the environment. Try to use an area where people have obviously camped before rather than creating a new spot. When camping in woodland， a void standing dead trees， which may fall on a windy night. Avoid animal runs and caves， and possible homes of biting insects. Make sure you have most protection on the windward side. If you make a fire， do so downwind of your shelter， always consider what influence you might have on the natural world. Avoid damaging plants. A good campsite is found， not made — changing it should be unnecessary.
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自然通风冷却塔分为（）两种
A.开发式和风筒式
B.横流式和逆流式
C.抽风式和鼓风式
D.抽风式和风筒式
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（）不是项目实施过程中沟通协调的方法。
A.监理例会
B.项目专题会
C.监理报告
D.旁站
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________ is of critical importance because it allows the grammar to generate an infinite number of sentences and sentences with infinite length.( )
A．Recursiveness
B．Phrase structure
C．Transformation
D．Movement
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调度部门要根据重点运输计划，科学合理地确定日装车计划，及时将（）的空车配置到位。
A.车体完整 B.定检不过期 C.状态良好 D.门窗齐全
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测定油浴式滴点时，脂杯内外的两支温度计的（）高度一致。
A.水银球
B.预计滴点温度刻线
C.76mm刻线
D.200℃刻线
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露天矿提高爆破经济技术指标的要求包括(、)。
A.在保证良好的爆破效果的前提下，尽可能减少基建投资和爆破工程量
B. 提高钻孔延米爆破方量，降低炸药单耗，使综合工程成本最低
C. 减少运输设备的待装和受载时间，提高效率
D. 采用多排孔微差爆破，降低爆破成本
E. 采用缓冲爆破，降低爆破成本
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重碳酸锂经肾脏排泄和重吸收，约多少在肾吸收（）
A.30%
B.60%
C.90%
D.50%
E.80%
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提高断路器的灭弧能力，不能抑制下列过电压中的（）
A.电弧接地过电压
B.切除空载变压器过电压
C.空载线路合闸过电压
D.空载线路分闸过电压
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当圆的直径过小时,可以用细实线来代替细点划线。
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“省”在古代汉语中的意思是（）。
A、节省
B、行政机构
C、从属
D、邦国
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