宫颈肥大因（）
A.宫颈长期充血、水肿以及腺体和间质增生
B.宫颈息肉形成
C.子宫颈肌纤维增粗
D.血液回流受阻
E.纤维结缔组织增生
参考答案：A
如图所示, 下列实验仪器工作时，把机械能转化为电能的是[ ]
A.
电流表
B.
电压表
C.
发电机
D.
电动机
The accident is reported ________ the workers' misusing the facilities. [ ]
A. to have been resulted in
B. to result from
C. having resulted in
D. to have resulted from
