【多选题】弹簧操动机构具有( )特点
A.
不需要大功率的储能源,紧急情况下也可手动储能,所以其独立性和适应性强,可在各种场合使
B.
根据需要可构成不同合闸功能的操作机构,用于220kV各电压等级的断路器中
C.
动作时间比电磁机构的快,因此可以缩短断路器的合闸时间
D.
缺点是结构比较复杂,机械加工工艺要求比较高。其合闸力输出特性为下降曲线,与断路器所需要的呈上升的合闸力特性不易配合好。合闸操作时冲击力较大,要求有较好的缓冲装置
【多选题】Macro planning and micro planning include:
A.
Programme planning;whole course planning
C.
Half a semester plannin
【简答题】在 48X48 点阵的字形码需要多少存储空间 ( )
【单选题】Unit planning belongs to __________.
C.
planning for a long term
【简答题】确保食品安全,重在预防,购买食品时做到“六要”指:
【单选题】According to the time limit of the planning period, the planning period of five years is ( ).
【单选题】What are they planning to do?
A.
They are planning to see a film.
B.
They are planning to eat out.
C.
They are going swimming.
【单选题】Strategic planning differs from scenario planning in that:
A.
Strategic planning is long-term planning; scenario planning is not.
B.
Strategic planning is bottom-up from the employees, and scenario planning is top-down from the CEO.
C.
Strategic planning is performed by many layers in the organization, while scenario planning is limited to top executives.
D.
Strategic planning assumes that future success can be predicted; scenario planning allows for more unforeseen events.