A、<strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">3</span></strong><strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">线制</span></strong>
B、<strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">5</span></strong><strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">线制</span></strong>
C、<strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">7</span></strong><strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">线制</span></strong>
D、<strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">1</span></strong><strong style="line-height: 33px; white-space: normal;"><span style="font-family: 宋体;">线制</span></strong>