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【单选题】
凸轮机构中,从动件构造最简单的是( )A.
从动件
B.
尖顶从动件
C.
滚子从动件
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皮皮学刷刷变学霸
举一反三
【单选题】Which of the following methods is often used by advertisers to get us buy their products?
A.
Make us feel dissatisfied with ourselves and our lives.
B.
Make us afraid that people won’t like us if we don’t use the advertised products.
C.
Write different ads for different groups of people.
D.
All of the above.
【简答题】Research and Development Dept.(R&D)
【单选题】在关系模式D(DEPTNO,DEPT,EMPLOYEEN)中,应该选用________为主键(其中DEPTNO表示部门编号,DEPT表示部门名称,EMPLOYEEN为员工人数)。
A.
DEPTNO
B.
DEPT
C.
EMPLOYEEN
D.
D
【简答题】They often choose to advertise their products ______ _______.
【单选题】（ ）products often feature games with learning embedded into them.
A.
Program
B.
Database
C.
Software
D.
Multimedia
【简答题】They often _______(design) ads for food products.
【简答题】必须坚持以人为本；必须坚持科学发展；必须坚持改革开放；必须坚持民主法治；必须坚持正确处理改革发展稳定的关系；必须坚持在党的领导下全社会共同建设．
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