下图是某粒子结构示意图:该粒子是_____离子(填“阳”或“阴”),它的质子数是______。
阳;13
My uncle _________ in a supermarket, but he _________ there these days. [ ]
A. works, isn't working
B. is working, works
C. works, not works
D. is work, doesn't work
燃油控制和监控由何种计算机实现()。
A.FQIC和CMC
B.FCMC
C.FWC
D.FMGEC