题目内容

额定电压为220V的三相对称负载,用线电压为380V的三相对称电源供电时,三相负载应连接成( )。

A. Y形
B. 三角形
C. 不确定

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在三相四线制照明电路中,中线可以随意断开。( )

A. 对
B. 错

Suppose that a disk drive has 3000 cylinders, numbered 0 to 2999. The drive is currently serving a request at cylinder 114, and the previous request was at cylinder 112. The queue of pending requests, in FIFO order, is 360, 1470, 913, 1274, 96, 509, 122, 1750, 108. Starting from the current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all the pending requests, for each of the following disk-scheduling algorithms? a. SSTF b. LOOK c. C-SCAN

不计入直接人工成本项目的有()。

A. 产品生产工人工资
B. 车间管理人员工资
C. 按产品生产工人工资提取的职工福利费
D. 产品生产工人的奖金

在采用计时工资形式下,如果生产多种产品,则应采用一定的分配标准分配工资后再计入各种产品成本明细账中的"直接人工"成本项目。()

A. 对
B. 错

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