【单选题】某公司1999年和2000年的产品销售情况见下表: 年份 销售数量(台) 销售单价(元) 单位销售成本(元) 1999 2000 110 85 2000 1950 125 90 那么该公司销售价格变动对利润的影响额为:
【单选题】根据主、俯视图,分析相邻表面的连接关系,选择正确的左视图( )。
【单选题】Come September, the campuses of America will be swarming not just with returning undergraduates, but also with employers set on signing up the most able 10% of them. 'We are seeing a far more competit...
A.
The universities play a minor role in helping their graduates to find a job.
B.
Nowadays undergraduates can get a decent job much easier than before.
C.
The companies spend more money than before in recruitment.
D.
The competition between talents scratching is fiercer.
【单选题】与普通货轮的辅锅炉对比,大型油船辅锅炉的——较大,所以对水位和蒸汽压力的控制要求也较高。
【单选题】Psycholinguistics, as a (an)_________ of cognitive science has seen an enormous growth.