There are on the desk.[ ]
A.any pens
B.two pens and a ruler
C.a ruler and two pens
答案:B
茶叶是怎样命名的?
诺西BSC3i中的BCSU的冗余方式是:()
A、2N
B、N+1/替代型
C、N+1/负荷分担型
D、无备份