若压杆在两个方向上的约束情况不同,且μy>μz。那么该压杆的合理截面应满足的条件有四种答案:()
A.Iy=Iz
B.Iy<Iz
C.Iy>Iz
D.λz=λy
参考答案:D
LTE系统中,无线传输方面引入了OFDM技术和MIMO技术。()
On a __( )__ memory system,the logical memory space available to the program is totally independent of the physical memory space.
A.cache
B.virtual
C.RAM
D.ROM