电气设备调试工作完毕后,应将()电源断开。
A.现场
B.万用表
C.气动工具和设备
D.配电柜
参考答案:C
A.It went out of use 300 years ago.
B.It was invented after the short bow.
C.It was discovered before fire and the wheel.
D.It’s still in use today.
下列关于实体型腹膜后脂肪肉瘤,哪项是错误()
A.脂肪组织成分为主
B.肿块多较大
C.肿瘤分化程度很低
D.纤维组织成分为主
E.肿块密度较均匀