【单选题】According to CISG, the offer can be submitted ( )
C.
in written form or be sent orally
【单选题】According to CISG, an effective acceptance must (
A.
expressed in oral or written form
D.
Both A and B are needed
【简答题】把______叫做一元二次方程a +bx+c=0(a 0)的根的判别式,常用符号_____来表示。 2. 一般地,方程 a +bx+c=0(a 0) 当_____时,有两个不相等的实数根;当_______时,有两个相等的实数根;当_______时,没有实数根,反过来,也成立。 3. 下列方程中,有两个不相等实数根的是( ) A. -2x-1=0 B. -2x+3=0 C. =2 -3 D. ...
【简答题】粘和的三要素是______,______,______
【简答题】试从动态性、并发性和独立性上比较进程和程序 。
【单选题】According to CISG, the offer can be submitted ( )
C.
in written form or to be sent orally