可作为扫描仪扫描对象的有（）
A.调解笔录
B.照片
C.询问笔录
D.美术图片
参考答案：A, B, C, D
No matter how frequently ____, the works of Beethoven still attract people all over the world. [ ]
A. performed
B. performing
C. to be performed
D. being performed
固定式洗舱机是指（）。
A、把洗舱机固定在甲板上
B、洗舱喷嘴可搞定点洗舱
C、洗舱机的洗舱范围是固定的
