切削脆性材料时易形成崩碎切屑。
参考答案:对
—Where is the bookstore?
—Take the elevator ______ the second floor and turn left. And the bookstore is ________ the furniture
store and the drugstore.[ ]
A. at, next to
B. at, between
C. to, between
D. to, next to
通常意义讲,狭义的教育是指()。
A.家庭教育
B.社会教育
C.学校教育
D.自我教育