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【单选题】
晶体管用（）挡测量基极和集电极、发射极之间的正向电阻值A.
R×10KΩ
B.
R×1KΩ
C.
R×100Ω
D.
R×10Ω
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皮皮学刷刷变学霸
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【单选题】What does his mother do?
A.
She owns a beauty salon.
B.
She runs a small family store.
C.
She works at a bread shop.
【简答题】智能大厦在建筑上包括: 建筑设备自动化系统、 办公自动化系统、 ( )。
【简答题】某地区按用电负荷预测,2020年规划区电网最高供电负荷预测为24万千瓦,采用110kv变电站,110kV变电站的容载比2.1。现状110kV变电站设置如下,请问变电站容量是否足够?如果不够,还需增设几台 主变压器,(新建110千伏变电站主变单台容量采用50MVA) 主变台数×容量(万千伏安) 财山站 3×5 园区站 2×5 白沙站 2×5 建新站 2×5
【单选题】Whichof the following assumptions is incorrect in cost-volume-profit analysis?
A.
Selling price is constant.
B.
Costs are linear and can be accurately divided into variable and fixed elements. Unit variable cost and unit fixed costs remain constant.
C.
In multiproduct companies, the sales mix is constant.
D.
In manufacturing companies, inventories do not change.
【单选题】________ and ________ are typically the measures of volume of activity in traditional volume-based cost systems.
A.
Practical capacity; products sold
B.
Direct labor hours; practical capacity
C.
Direct labor hours; machine hours
D.
Square footage; machine hours
【单选题】Selecting a volume‐related cost driver and classifying each account as a variable cost or a fixed cost is called:
A.
a. engineering analysis
B.
b. high‑low analysis
C.
c. visual‑fit analysis
D.
d. account analysis
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