【简答题】函数 f ( x , y )= x 2+4 y 2-2 x +8 y 的极小值为 。
【简答题】“beef” and “meat” is the sense relation of____. “ring” and “wring” reflect the sense relation of____.
【单选题】30岁女性,停经17周,1个月来间断少量阴道出血,腹部无明显压痛、反跳痛,子宫颈口未开,子宫增大如孕8周,最可能的诊断为
【判断题】Hyponymy (p.226) refers to the sense relation between a more general word and a more specific word.()
【单选题】患者停经17周,1个月来间断少量阴道出血,检查腹部无明显压痛、反跳痛,子宫颈口未开,子宫增大如孕8周,最可能的诊断为
【简答题】求函数f(x,y)=x 2 +2y 2 的极小值,等式约束条件为 g(x,y)=x+2y+4=0并验证充分条件。
【简答题】二元函数f(x,y)=x^2+y^4-1的极小值为______.
【单选题】29岁,停经17周,1个月来间断少量阴道出血,检查腹部无明显压痛、反跳痛,子宫颈口未开,子宫增大如孕8周,最可能的诊断为
【单选题】孕妇,停经17周,1个月来间断少量阴道出血,检查腹部无明显压痛、反跳痛,子宫颈口未开,子宫增大如孕8周,最可能的诊断为
【单选题】What is the sense relation between Sentence A 'Johns computer needs repairing' and Sentence B 'John has a computer'?
A.
Sentence A entails sentence B
B.
Sentence A presupposes sentence B.
C.
Sentence A is a prerequisite of sentence B
D.
Sentence A is an entailment of sentence B.