单项选择题
一台额定载重量为1000KG的乘客电梯,平衡系数为50%,当轿厢内载荷为450KG时,上下运动测量电动机电流,此时()。
A、上行电流比下行电流大B、下行电流比上行电流大C、上行电流和下行电流相等
一台额定载重量为1000KG的乘客电梯,平衡系数为50%,当轿厢内载荷为450KG时,上下运动测量电动机电流,此时()。
A、上行电流比下行电流大B、下行电流比上行电流大C、上行电流和下行电流相等
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单项选择题
The set of choices the firm offers to its targeted market is known as the ( ).
The set of choices the firm offers to its targeted market is known as the ( ).
A.marketing mix
B.marketing concept
C.marketing strategy
D.market promotion