She made a few mistakes playing the violin,but you should make　　for her since she’s only been playing for a year.

A．allowances

B．promises

C．room

D．way

下列超声诊断仪的维护和安全注意事项中，何项不妥

A、防尘、经常保持室内清洁 

B、防潮，经常开机 

C、避免高温环境工作或建立良好的通风 

D、配置可靠的稳压器或直接利用医院中心提供的稳压系统 

E、可靠接地。采用三孔插座带地线电源，而且连接专门地线