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【简答题】
光纤的主要材料是 ,结构从内到外依次是 、 和 —— 。其中 —— 是光纤导光部分。
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皮皮学刷刷变学霸
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【简答题】当一个负载所加的电压U=12V,通过的电流为2A,如果给此负载持续通电10秒,则电流所做的功W为( )焦耳?负载此时间内消耗的平均功率P为( )W?
【单选题】Based on the data above, what is the maximum inventory level?
A.
1750
B.
2275
C.
2860
D.
2900
【单选题】What is the effect on inventory carrying costs if order size is increased and frequency of orders decreased?
A.
costs increase
B.
costs decrease
C.
costs remain the same
D.
the effect cannot be determine
【单选题】Jiff sells his goods at a mark up of 25% on cost price. During the year the following took place. $ sales 1250 purchases 600 Opening inventory was $1000 What is closing inventor...
A.
$3500
B.
$1000
C.
$500
D.
$600
【单选题】For a particular component, the re-order quantity is 6,000 units and the average inventory holding is 3,400 units. What is the level of safety inventory (in whole units)?
A.
400
B.
3,400
C.
3,000
D.
6,400
【简答题】平行四边形的高是5厘米，底是高的2倍，它的面积是（ ）平方厘米。
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