COSPAS/SARSAT卫星通信系统覆盖范围是()。
A、全球
B、南北纬70度以内
C、南北纬70度以外
D、二极
参考答案:A
160÷40中,如果被除数和除数同时扩大100倍,它们的商( )
A.扩大100倍
B.缩小100倍
C.不变
D.扩大10倍
A project manager is at the project kick-off meeting.He confidently states the vision and mission for the project.This PM is exhibiting () leadership style.
A.hierarchical
B.authoritarian
C.charismatic
D.associative