A. 0.022英寸×0.025英寸 B. 0.022英寸×0.028英寸 C. 0.020英寸×0.045英寸 D. 0.020英寸×0.028英寸 E. 0.020英寸×0.025英寸
A. 80% B. 60% C. 40% D. 20%