【单选题】两个电阻串联的电路,R1:R2=1:2,两电阻总电压为60V,则电阻R1的分压U1为( )
【简答题】患者男性,53岁,肝硬化病史6年,突然出现呕血约800ml,伴黑便,速来就医。查体:神清,血压13.2/8.0kPa,心率100次/分。上消化道出血的最可能原因为A、食管胃底静脉曲张破裂出血 B、胃溃疡出血 C、十二指肠壶腹部溃疡出血 D、急性胃黏膜糜烂 E、胃癌出血 对于该患者的护理,下列哪项不正确A、保持呼吸道通畅,呕血时头偏向一侧 B、平卧位,将头略抬高 C、减轻病人的紧张情绪 D、密切观察...
【单选题】两个电阻串联,R 1 :R 2 =1:2,总电压为60V,则电阻R 1 两端电压大小为( )
【单选题】《琵琶行》在白居易诗歌的分类中,属于 ( )
【多选题】When learners encounter new items they need to know
B.
how they are used in communication.
C.
how to pronounce them, their grammatical structure.
D.
how they relate to other language items.
【简答题】Oxford When language learners arrive in Oxford, many ask where the university is, thinking that they will be shown just one building. It's up to their teachers to explain that Oxford university is mad...
【单选题】《琵琶行》在白居易诗歌的分类中属于______
【单选题】Visual learners learn better when they can ________.
【单选题】患者,男性,40岁,因“呕血伴黑便半天”入院。患者于半天前无明显诱因,呕暗红色血液200ml,伴黑便,为黑色稀便,量较多,患者自觉头昏、乏力、出冷汗,近日上述症状明显加重,为进一步明确诊断及治疗而转入某院。体格检查:T36.7℃,P90次/分,R20次/分,BP105/66mmHg,神志清楚,重度贫血貌,全身皮肤黏膜黄疸,颈部可见数枚蜘蛛痣,肝掌(+),浅表淋巴结触及肿大,腹部明显膨隆,均有压痛及...