更多“什么是旋转磁场？用什么方法可以得到旋转磁场？”相关的问题
房颤心室率控制药物中（）具有潜在器官毒性及药物相互作用，仅作为其他药物联合治疗控制心室率不佳时的备选药物。
A.静脉β阻剂
B.非二氢吡啶类钙拮抗剂
C.洋地黄类
D.胺碘酮
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保证公共场所卫生安全的第一责任人是（）。
A.卫生监督部门B.卫生行政部门C.公共场所经营者D.疾病预防控制部门
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通过观察钢样火花来判断终点钢水碳含量时，在相同碳含量时，钢水温度高时其火花分叉比钢水温度低时（）。
A.偏高
B.偏低
C.不受影响
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店朝僧人皎然有诗曰：“一饮涤昏寐，情思爽朗满田地。再饮清我神，忽如飞雨洒轻尘。三饮便得道，何须苦心破烦恼。诗中提到的唐朝人喜爱的“饮”是（）
A . 咖啡
B . 茶
C . 酒
D . 汽水
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糖尿病患者饮食均衡化错误的是（）
A.食物品种多样化，全面获得营养
B.四大类食品不可缺：谷薯类、菜果类、肉蛋奶豆类、油脂类
C.高蛋白饮食
D.勿挑食，勿偏食
E.粗细粮搭配，荤素食搭配
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A．心力衰竭 B．心肌炎C．洋地黄中毒 D．冠心病室性心动过速最常见的病因是
A．
B．
C．
D．
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《处方管理办法》规定，开具处方时，书写药品用法不得使用（）
A.英文 B.中文 C.缩写体 D.拉丁文 E.含糊不清字句
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康定斯基用点、线、面打通了音乐与绘画的隔阂，蒙德里安则用理性的思维构建了绘画与建筑及设计之间沟通的桥梁。（）
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In Europe, there has been a serious decline in physical activity over the past 50 years. Adults aged 20-60 years【C1】______500kcal less energy per day than they did 50 years ago. This is the【C2】______to the running of a marathon each week. Even【C3】______of participation in walking and cycling are declining, all of which suggests we should be【C4】______to the nearest gym. But the "green" policies of these establishments【C5】______to be pretty disappointing: factor in air-conditioning, laundering of towels, energy-consuming exercise【C6】______and the fact that 90% of exercisers【C7】______to the gym. British Military Fitness, the UK"s leading【C8】______fitness provider, offers a programme of nationwide classes in parks, and on common lands, in the【C9】______of its Gym Intervention programme. The organisation【C10】______not just the fitness benefits of working out outside, also our need to spend time in the great outdoors to【C11】______overall mental and physical wellbeing. Group activity is declining as fast as our fit ness rates, so the complete ethical workout doesn"t merely【C12】______the greenness of the equipment, but also the social capital to be【C13】______by joining in. It also【C14】______to start early. Children urgently need to become more【C15】______. and yet according to Natural England, a public body that encourages people to enjoy their natural surroundings, the amount of time and【C16】______children have with nature is declining; fewer than 10% now play in natural places【C17】______woodlands, countryside and common land compared with 40% of children 40 years ago. Research shows that children who are【C18】______to nature will continue to visit【C19】______landscapes in adulthood and be committed to【C20】______them.
A．forcedB．marchedC．compelledD．accompanied
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强国挑战答题答案：电动自行车应在____充电才安全。
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盛唐诗的主要特点不包括（）。
A.声律风骨具备 B.句法浑涵 C.田园山水诗占很大比重 D.偶有边塞诗
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男40岁肝区疼痛，消瘦乏力，腹部包块，AFP阳性，MR检查如图，最佳的诊断是哪一项（ ）
A.肝脓肿 B.肝血管瘤 C.肝腺瘤 D.肝肉芽肿 E.肝癌
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计算机局域网的介质访问方式有( )。
A．同轴电缆和光纤等
B．CSMA/CD和令牌环等
C．电路交换和分组交换等
D．客户/服务器和对等模式等
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