176,178,198,253,()
A.360
B.361
C.362
D.363
176, 178, 198, 253, () A.360 B.361 C.362 D.363
2,12,36,80,150,()A.250 B.252 C.253 D.254
2,7,22,67,__________。 A.198B.176C.230D.202
2,12,36,80,150,() A.250 B.252 C.253 D.254
2, 12, 36,80, 150, ()A.250 B.252 C.253 D.254
用某种仪器间接测量硬度 重复测量5次 所得数据是175 173 178 174 176 而用别的精