皮皮学,免费搜题
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搜题
【简答题】
Chair Co has developed a new type of luxury car seat. The estimated labour time for the first unit is 12 hours but a learning curve of 75% is expected to apply for the first eight units produced. The cost of labour is $15 per hour. The cost of materials and other variable overheads is expected to total $230 per unit. Chair Co plans on pricing the seat by adding a 50% mark-up to the total variable cost per seat, with the labour cost being based on the incremental time taken to produce the 8th unit. Required: (a) Calculate the price which Chair Co expects to charge for the new seat. Note: The learning index for a 75% learning curve is –0·415. (5 marks) (b) The first phase of production has now been completed for the new car seat. The first unit actually took 12·5 hours to make and the total time for the first eight units was 34·3 hours, at which point the learning effect came to an end. Chair Co are planning on adjusting the price to reflect the actual time it took to complete the 8th unit. Required: (i) Calculate the actual rate of learning and state whether this means that the labour force actually learnt more quickly or less quickly than expected. (3 marks) (ii) Briefly explain whether the adjusted price charged by Chair Co will be higher or lower than the price you calculated in part (a) above. You are NOT required to calculate the adjusted price. (2 marks)
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【单选题】____是描述单位时间内通过导体某横截面的电荷之多少的物理量,其国际标准单位____。
A.
电量/库仑
B.
电流/安培
C.
电量/安培
D.
电压/伏特
【单选题】述单位时间内通过导体某横截面的电荷多少之物理量及其国际标准单位分别是______。
A.
电量,库仑
B.
电流,安培
C.
电量,安培
D.
电压,伏特
【单选题】从同一正态总体中随机抽取多个样本,用样本均数来估计总体均数的可信区间,以下得到的估计精度高的样本是
A.
标准差小的样本
B.
均数小的样本
C.
均数大的样本
D.
标准误大的样本
E.
标准误小的样本
【单选题】从同一正态总体中随机抽取多个样本,用样本均数来估计总体均数的可信区间,下列哪一样本得到的估计精度高
A.
均数大的样本
B.
均数小的样本
C.
标准差小的样本
D.
标准误小的样本
E.
标准误大的样本
【单选题】甚高频设备载波输出功率应当在多少瓦之内?
A.
1
B.
25
C.
50
D.
75
【单选题】从同一正态总体中随机抽取多个样本,用样本均数来估计总体均数的可信区间,下列哪一样本得到的估计精度高( )。
A.
均数大的样本
B.
标准差大的样本
C.
标准差小的样本
D.
标准误小的样本
E.
标准误大的样本
【单选题】骨骼肌细胞收缩的最基本单位是
A.
细肌丝
B.
粗肌丝
C.
肌小节
D.
肌管
E.
肌原纤维
【判断题】苯环的质子位于去屏蔽区。
A.
正确
B.
错误
【单选题】在外加磁场中,苯环上的质子都位于 ( )
A.
屏蔽区
B.
去屏蔽区
C.
屏蔽区和去屏蔽区
【单选题】______是描述单位时间内通过导体某横截面的电荷之多少的物理量,其国际标准单位是______。
A.
电量/库仑
B.
电流/安培
C.
电量/安培
D.
电压/伏特
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