【单选题】The earthquake in Japan, measuring 9.0 on the Richter Scale, was so violent cause a series of explosions of the nuclear reactors in several power stations.
【简答题】患者男性,65岁。既往高血压及吸烟史20年。2年前劳累时感到胸骨后压榨性疼痛,休息或含硝酸甘油5分钟内缓解。今晨突然胸骨后剧痛,休息并含硝酸甘油效果不佳,持续3小时,被急送医院。体格检查:面色苍白,出汗多,血压160/90mmHg,心率100次/分,律不齐,偶有早搏,余(-),心电图V1~V5ST段明显抬高,弓背向上,可见Q波。为明确诊断还需要做的检查有A、平板运动试验 B、胸导联心电图 C、肌钙...
【判断题】三极管由两个PN结组成,所以可以用两只二极管组合构成。
【单选题】The earthquake may __ landslides that cause great damage and loss of life.
【判断题】晶体三极管由两个PN结组成,所以可以用两个二极管构成三极管。
【简答题】The direct cause of most earthquake-related deaths or injuries is seldom ground movement, but______, flying glass and falling objects.
【判断题】三极管由两个PN结组成,所以可以用两只二极管组合构成三极管
【判断题】三极管由两个PN结组成,所以可以用两只二极管组合构成三极管。
【单选题】Lecture B Seismic Waves Which wave is the main cause of the shaking in during an earthquake?