【单选题】竹篮打水一场空 “竹篮打水一场空”,成语,又作竹篮打水( draw water with a bamboo basket ─ all in vain ),比喻白费力气,没有效果,劳而无功( work hard but to no avail ; a fruitless attempt )。 例句: d à o t ó u l á i , zh ú l á n d ǎ shu ǐ y ī ch ǎ ...
【判断题】n足够大时,最后一个站停止运行,对系统的输气量实际上并不产生多大影响。Description: when n is large enough, the last station will stop running, which will not have much effect on the system's gas transmission.