已知复数Z1,Z2满足|Z1|=2,|Z2|=3,若它们所对应向量的夹角为60°,则().
参考答案:
The shirt looks fashionable and well designed, but I'm afraid the color will ____ when I wash it.[ ]
A. go
B. slip
C. leave
D. run
下列疾病,蜘蛛痣有诊断意义的是()
A.肝硬化
B.麻疹
C.猩红热
D.伤寒
E.药物过敏