目前,我国生产的铂热电阻,其初始电阻值有( ).
A、<span lang="EN-US"><font face="宋体">30</font></span><span style="FONT-FAMILY: Symbol; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: 宋体; mso-hansi-font-family: 宋体; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">W</span></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt" lang="EN-US"><span style="mso-spacerun: yes"></span></span>
B、<span lang="EN-US"><font face="宋体">50</font></span><span style="FONT-FAMILY: Symbol; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: 宋体; mso-hansi-font-family: 宋体; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">W</span></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt" lang="EN-US"><span style="mso-spacerun: yes"></span></span>
C、<span lang="EN-US"><font face="宋体">100</font></span><span style="FONT-FAMILY: Symbol; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: 宋体; mso-hansi-font-family: 宋体; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">W</span></span><span style="FONT-FAMILY: 宋体; mso-bidi-font-size: 14.0pt" lang="EN-US"><span style="mso-spacerun: yes"></span></span>
D、<span lang="EN-US"><font face="宋体">40</font></span><span style="FONT-FAMILY: Symbol; mso-bidi-font-size: 14.0pt; mso-ascii-font-family: 宋体; mso-hansi-font-family: 宋体; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">W</span></span>
查看答案