更多“马克思主义政治观认为，政治的本质特征是()。”相关的问题
体内污染下列哪种核素可通过体外测定估计污染水平？（ ）
A.γ射线 B.α射线 C.低能β射线 D.高能β射线 E.以上均不可
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既能解表散寒、祛风止痛、通鼻窍，又能燥湿止带、消肿排脓的药物是（）
A.白芷
B.荆芥
C.防风
D.苍术
E.羌活
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要与倾听者建立和谐的关系，使自己的语言更富有影响力，可采用的做法是（）。
A.隐喻
B.明喻
C.排比
D.对比
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A . 固定不变B . 动态平衡C . 不断改变D . 随机改变
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如果两家企业并购时股票市价交换比例为1，在不考虑其他因素的情况下，两家企业均从中取得利益。
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有较强的消毒作用和镇痛作用，对牙髓的刺激性小（）
A．木榴油
B．樟脑酚合剂
C．70%～75%乙醇
D．甲醛甲酚
E．麝香草酚酒精溶液与以下所描述性质相符的药物是
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以下不属于变形缝的是（） 。
A.伸缩缝 B.沉降缝 C.防震缝 D.水磨石地面分格缝
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教学方法是在教学过程中，教师和学生为实现教学目的，完成教学任务而采取的————相互作用的活动方式的总称。它包括教师的教法、学生的学法以及教与学共用的方法。
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注射破伤风类毒素主动免疫后，若无外伤，应隔多久再强化一次（）。
A.每年
B.每2年注射1次
C.每3年注射1次
D.5～10年
E.不需再强化
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女性，70岁，慢性咳嗽、咳痰30年，气短5年，2天前受凉后咳嗽，咳痰加重，痰量增加，伴发热、喘息。肺功能检查FEV/FVC60%及FEV占预计值的45%。目前该患者最主要的治疗是（ ）
A.气雾治疗 B.祛痰、镇咳 C.解痉、平喘 D.抗感染、祛痰 E.提高免疫功能
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第一组： The Wartsila 50DF operates on the lean-bum principle: the mixture of air and gas in the cylinder has more air than is needed for complete combustion. Lean combustion reduces peak temperatures and therefore NOx emissions. Efficiency is increased and higher output is reached while avoiding knocking. Combustion of the lean air-fuel mixture is initiated by injecting a small amount of LFO (pilot fuel) into the cylinder. The pilot fuel is ignited in a conventional diesel process, providing a high-energy ignition source for the main engine. To obtain the best efficiency and lowest emissions, every cylinder is individually controlled to ensure operation at the correct air-fuel ratio and with the correct amount and timing of pilot fuel rejection. Wartsila has developed a special electronic control system to cope with the demanding task of controlling the combustion in each cylinder, and to ensure optimal performance in terms of efficiency and emissions under all conditions by keeping each cylinder within the operating window. Stable and well-controlled combustion also contributes to less mechanical and thermal load on the engine components. Current stringent emission regulations demand the reduction of NOx emissions. In an internal combustion engine this means controlling peak temperature and residence time, which are the main parameters governing NOx formations. In the Wartsila 50DF engine, the air-fuel ratio is very high (typically 2.2). Since the same specific heat quantity released by combustion is used to heat up a larger mass of air, the maximum temperature and consequently NOx formation are lower. The mixture is uniform. throughout the cylinder since the fuel and air are premixed before introduction into the cylinders, which helps to avoid local NOx formation points within the cylinder. Benefiting from this unique feature, NOx emissions from the Wartsila 50DF are extremely and comply with the most stringent existing legislation.What is the combustion feature of the Wartsila 50DF?A.Lean air in the cylinderB.Excessive fuel in the cylinderC.Excessive air in the cylinderD.Spark ignition
A.2).B.WhatC.LeanD.ExcessiveE.ExcessiveF.Spark
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IdeaPad U450配置的光敏传感器可以根据环境光线亮度的变化自动调节屏幕的亮度，其位置在（）
A.A壳
B.B壳
C.C壳
D.D壳
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下述哪一种原发瘤的肺转移可以出现骨化（）
A.肝癌 B.乳癌 C.黑色素瘤 D.肾癌 E.成骨肉瘤
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1842年8月，清朝廷被迫与英国签订不平等的（），中国自此开始沦为半殖民地半封建社会。
A.北京条约 B.辛丑条约 C.马关条约 D.南京条约
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