切割金属的条件有哪些？-我要搜题网

[单项选择]The"Lost Generation"refers to those who（）
A. have no ambition in life
B. are physically and spiritually impotent
C. are homeless
D. are expatriates

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[填空题]生产类型通常分为（）三种。

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[判断题]中间站利用本务机调车作业时，一批作业不超过3钩时，可不使用调车作业通知单。
A.正确
B.错误

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[单项选择]下列哪些不属于抗精神失常药
A. 舒必利
B. 五氟利多
C. 丙吡胺
D. 匹莫齐特
E. 奋乃静

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[单选题]哪项不是肝性脑病的一般治疗措施
A.止血和清除肠道积血
B.调整饮食结构
C.慎用镇静药
D.禁用抗组胺药
E.纠正电解质和酸碱平衡紊乱

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[单选题]客户价值矩阵把客户划分成四种类型, 其中( )不包含在这四种类型中。
A.次价值客户
B.潜在价值客户
C.低价值客户
D.无价值客户

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[填空题]热力网停止运行期间，必须对管网采取一定的(　　)，如：定期对转动部件加油、涂漆、防腐等。以防造成腐蚀和其它形式的破坏。

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[单选题] 车站、车辆段时钟系统由二级母钟、时钟输入接口和( )等设备构成。
A.子钟
B.电缆
C.电源
D.交换机

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[单项选择]下列哪个不是危险因素的作用特点（）
A. 潜伏期长
B. 联合作用强
C. 广泛存在
D. 与慢性病是单因单果关系
E. 特异性弱

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[单选题]“The ancient Hawaiians were astronomers,”wrote Queen Liliuokalani,Hawaii's last reigning monarch,in 1897.Star watchers were among the most esteemed members of Hawaiian society.Sadly,all is not well with astronomy in Hawaii today.Protests have erupted over construction of the Thirty Meter Telescope（TMT）,a giant observatory that promises to revolutionize humanity's view of the cosmos.At issue is the TMT's planned location on Mauna Kea,a dormant volcano worshiped by some Hawaiians as the piko,that connects the Hawaiian Islands to the heavens.But Mauna Kea is also home to some of the world's most powerful telescopes.Rested in the Pacific Ocean,Mauna Kea's peak rises above the bulk of our planet's dense atmosphere,where conditions allow telescopes to obtain images of unsurpassed clarity.Opposition to telescopes on Mauna Kea is nothing new.A small but vocal group of Hawaiians and environmentalists have long viewed their presence as disrespect far sacred land and a painful reminder of the occupation of what was once a sovereign nation.Some blame for the current controversy belongs to astronomers.In their eagerness to build bigger telescopes,they forgot that science is not the only way of understanding the world.They did not always prioritize the protection of Mauna Kea's fragile ecosystems or its holiness to the islands'inhabitants.Hawaiian culture is not a relic of the past；it is a living culture undergoing a renaissance today.Yet science has a cultural history,too,with roots going back to the dawn of civilization.The same curiosity to find what lies beyond the horizon that first brought early Polynesians to Hawaii's shores inspires astronomers today to explore the heavens.Calls to disassemble all telescopes on Mauna Kea or to ban future development there ignore the reality that astronomy and Hawaiian culture both seek to answer big questions about who we are,where we come from and where we are going.Perhaps that is why we explore the starry skies,as if answering a primal calling to know ourselves and our true ancestral homes.The astronomy community is making compromises to change its use of Mauna Kea.The TMT site was chosen to minimize the telescope’s visibility around the island and to avoid archaeological and environmental impact.To limit the number of telescopes on Mauna Kea,old ones will be removed at the end of their lifetimes and their sites returned to a natural state.There is no reason why everyone cannot be welcomed on Mauna Kea to embrace their cultural heritage and to study the stars. The construction of the TMT is opposed by some locals partly because____
A.it may risk ruining their intellectual life.
B.it reminds them of a humiliating history.
C.their culture will lose a chance of revival.
D.they fear losing control of Mauna Kea.

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[多选题]电力贯通线供电范围有：
A.自动闭塞信号备用电源
B.中间站信号、小站电气集中、无线列调、车站电台、通信机械室等与行车直接相关的小容量设备
C.红外线轴温探测设备；
D.车站信号室、通信机械室等处的重要照明设备；

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[判断题]根据现行税收政策规定，国家重大水利工程建设基金减半征收教育费附加。
A.正确
B.错误

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[单项选择]关于根管成形，说法错误的是（）
A. 旋转使用的器械，旋转幅度不能超过两圈
B. 常用逐步后退法，根管壁原来直径至少扩大3个器械号
C. 机械预备结合化学预备，边预备边冲洗
D. 维持原根管形态，具有连续的锥度
E. 正确使用器械，避免折断

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[单选题](0.25分)【单选题】滤过膜结构不包括
A.毛细血管内皮细胞层
B.基底膜层
C.肾小囊脏层
D.肾小囊壁层
E.滤过裂隙膜

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[单项选择]耻骨联合分离或耻骨支骨折合并骶髂关节脱位伴有半侧骨盆移位者
A. 卧床休息
B. 双下肢皮肤牵引
C. 骨盆兜悬吊牵引固定，5～6周后换用石膏短裤固定
D. 一侧或两侧髂内动脉结扎或栓塞
E. 手法复位＋胶布条环绕骨盆固定＋患侧下肢骨牵引

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[判断题]使用固定式抱杆立、撤杆，抱杆基础应平整坚实，缆风绳应分布合理、受力均匀。
A.正确
B.错误