问题
单项选择题
The foremost part of the upper deck is called the().
A.forecastle
B.tweendeck
C.hatches
D.peak tanks
答案
参考答案:A
The foremost part of the upper deck is called the().
A.forecastle
B.tweendeck
C.hatches
D.peak tanks
参考答案:A
(一)
管径(cm) | 20 | 30 |
配管工程费(万元) 每年水泵运行费(万元) | 1800 350 | 2400 200 |
当资本的利率依然为10%,则30cm直径的方案净年值为( )万元。
A.581
B.508
C.496
D.486