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【单选题】工具供应和管理的基本原则之一是：及时齐备并经济地供应效能良好的工具；根据各工种配套工具标准和实际生产需要，实行( )。坚持交旧领新和废旧工具回收制度；积极进行废旧工具的修复利用。
A.
计划先行
B.
废物利用
C.
现场配料
D.
定额供应
【单选题】E Reading is not the only way to gain knowledge of the work in the past. There is another large. reservoir which may be called experience, and the college students will find, that every ...
A.
The college students have trouble separating good plants from wild grass.
B.
Craftsmen’s experience is usually unscientific.
C.
Craftsmen don’t like teaching the contemptuous (傲慢的) college students.
D.
Traditional practices are as important as experience for the college students.