为了准备招募一位新的行政助理，现在需要一份职位描述和一份任职资格说明。请举例解释两者之间的区别。
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移动式压力容器压力表盘刻度极限值应当为最大工作压力的（)倍。
A. 1.5～2.0
B. 1.5～3.0
C. 2
D. 3
Joe pushed the door ___ and went in quickly.
A. opened
B. open
C. opening
D. openly
某墙体设计配筋为φ14@200，现无φ14钢筋，拟用φ12按等面积原则代换，试计算代换后每米几根。
There are_________ of visitors to Kunming.
A. tens of thousands 2000
B. about ten of thousands
C. about three thousands
D. about three thousand
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