震颤、脱皮
A．苯妥英钠B．卡马西平C．加巴喷丁D．丙戊酸钠E．地西泮
参考答案：D
This city, ______ lies in the northeast, was the country's busiest port from 1648 to 1950.[ ]
A. that
B. which
C. what
D. where
A．U=vBl，流过固定电阻R的感应电流由b到d
B．U=vBl，流过固定电阻R的感应电流由d到b
C．U=vBl，流过固定电阻R的感应电流由b到d
D．U=vBl，流过固定电阻R的感应电流由d到b
vBl
vBl