It was the training _______ he had at school _______  made him a good jumper.[ ]

A. what; what      

B. that; that      

C. what; that        

D. that; had

下列哪些项目是属于日常设备维修范畴（）.

A.地坪局部维修

B.配电箱维修

C.更换加油机

D.罩棚灯维修