你可能感兴趣的试题
will rent rented has rented had rented
I=E/(R+ro) I=I/E(R+ro) I=E(R+ro) I=(R+ro)/E
I=E/(R十ro) I=l/E(R+ro) I=E(R十ro) I=(R十ro )/E
Besides Therefore Somehow Otherwise
入路由以及小区的RO参数, 只与入路由的RO参数, 只与小区的RO参数, 与入路由的RO参数以及小区的EA参数
+5价,ⅦA族 +5价,ⅤA族 +7价,ⅦA族 +7价,ⅤA族
I=E/R+RO U=IRO U=E+IRO I =(U-E)/RO
when I come back when I’ll come back before I come back before I’ll come back
after I got back since I get back after I get back since I got back
Ro1+Ro2+R3 Ro1×Ro2×R3 Ro1 R3
+5价,第ⅦA.族 +5价,第ⅤA.族 +7价,第ⅦA.族 +7价,第ⅤA.族
I=E/(R+ro) I=E(R+ro) I=R+ro/E
broke up broke down broke out broke in
RO3n-中R.的化合价为+5价,n=1 R.位于元素周期表中的第VA族 R.的氢化物的水溶液和它的氧化物的水化物均呈酸性 R.的最外层电子为7