【单选题】患者,46岁,患腰肌劳损,腰痛2年多,用封闭、推拿、针灸等治疗效果不明显,患者有腰膝酸软,盗汗遗精,神疲头昏,失眠,咽干,遗精等症状,脉弦细,两尺尤弱,苔薄中裂,舌质较红,乃肾水不足,精髓内亏,配以左归丸。左归丸的功能为()
【单选题】An ammeter should be used to measure _____.
A.
the voltage between two points in a circuit
C.
current flow in a circuit
D.
total or partial circuit resistance
【单选题】An ammeter should be used to measure _____.
A.
the voltage between two points in the circuit
C.
current flow in a circuit
D.
total or partial circuit resistance
【判断题】An ammeter is used to measure the current.