网状时空结构又被称为()
A.内含式时空结构
B.串联式时空结构
C.并联式时空结构
D.交错式时空结构
参考答案:D
改错。
( ) 1. I'm thirsty. I want some fried rice. _______________
A B C
( ) 2. Is it fresh? No, it is. _______________
( ) 3. He wants to eating a banana. _______________
( ) 4. Is that a egg? _______________
( ) 5. The jug is to big. _______________
A.条件(1)充分,但条件(2)不充分. B.条件(2)充分,但条件(1)不充分. C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分. D.条件(1)充分,条件(2)也充分. E.条件(1)和(2)单独都不充分,条件(1)和条件(2)联合起来也不充分.
直线x-y+k=0与圆y2=4x-x2没有交点. (1) k>1 (2) k<-5