励磁特性测量试验时，应确保操作人员及试验仪器与电力设备的高压部分保持足够的安全距离，

His shoes are muddy. He        be working in an office all day.

A．mustn ’t

B．can’t

C．needn’t

D．maybe

— How do you keep fit?

—By having a healthy diet and _________ regularly.

A．turning out

B．working out

C．giving out

D．going out

患者，男，28岁。癫痫大发作。眩晕，两目干涩，心烦失眠，腰膝酸软，舌红少苔，脉细数。其中医治法是

A．补益肝肾，育阴息风

B．健脾和胃，化痰息风

C．清肝泻火，化痰息风

D．涤痰息风，开窍定痫

E．活血化瘀，通络息风

拔除胸膜腔闭式引流管时，应嘱患者

A．正常深呼吸

B．深吸气后屏气

C．深呼气后屏气

D．浅呼气后屏气

E．浅吸气后屏气

针刺时发生晕针如何处理？