单项选择题
A.6V B.8V C.10V D.12V
A.2%,1% B.2%,1.5% C.1%,1% D.1.5%,1%
A.95℃ B.115℃ C.130℃ D.155℃
A.70℃ B.80℃ C.90℃ D.100℃
微信扫一扫,加关注免费搜题