31 A contract is legally binding and must comprise all but one of the following:
A. legal capacity
B. mutual assent
C. approved negotiations
D. consideration
E. legality
第1题:
---- Look! The man at the gate ________ be our headmaster. He is always standing there every morning.
--- - No, it ________ be him. He is holding a meeting in the office now.
A.must, can’t B.must, mustn’t C.can’t, can’t D.can’t, mustn’t
第2题:
第3题:
第4题:
3.—__________ 1 go out for a while?
—No,you __________ You must finish your homework first.
A. Must,needn't
B. Can,may
C. May,mustn't
D. May,must
第5题:

第6题:
假定现在有一个四分类问题,你要用One-vs-all策略训练一个SVM的模型,你需要训练几个SVM模型?
A.1
B.2
C.3
D.4