问题
单项选择题
下列设备不属于压缩机系统附属设备项的是（）。
A.油箱
B.油泵
C.再沸器
D.油过滤器
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
下列设备不属于压缩机系统附属设备项的是（）。
A.油箱
B.油泵
C.再沸器
D.油过滤器
参考答案：C
Jane Higgins, CFA, a industry analyst, does research about inventory valuation. The company uses a periodic inventory system and no inventory on 31 May, 2012. The company purchases inventory as follows:
| Purchase Date | Cost per Unit | Number of Units |
| 1 May | $14.00 | 1000 |
| 3 May | $10.00 | 400 |
| 6 May | $8.00 | 1500 |
| 23 May | $10.00 | 300 |
During May, 2000 units are sold. Under the weighted average cost method of inventory valuation, cost of goods sold is closest to:（）
A.
20160
B.20625
C.31000