安装V带时,应缩小中心距后将带套入,再慢慢调整中心距,使达到合适的张紧程度,用大拇指按下( )左右,则张紧程度合适。
A.
prefix="st1" ns="urn:schemas-microsoft-com:office:smarttags" 15mm prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>?xml:namespace>
B.
prefix="st1" ns="urn:schemas-microsoft-com:office:smarttags" 16mm prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>?xml:namespace>
C.
prefix="st1" ns="urn:schemas-microsoft-com:office:smarttags" 17mm ?xml:namespace> prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>
D.
prefix="st1" ns="urn:schemas-microsoft-com:office:smarttags" 18mm ?xml:namespace> prefix="o" ns="urn:schemas-microsoft-com:office:office" ?xml:namespace>