A、<span style="font-size:16px;font-family:宋体">前馈控制</span><span style="font-size: 16px;font-family:'Times New Roman','serif'"> </span>
B、<span style="font-size:16px;font-family:宋体">选择性控制</span><span style="font-size: 16px;font-family:'Times New Roman','serif'"> </span>
C、<span style="font-size:16px;font-family:宋体">分程控制</span><span style="font-size: 16px;font-family:'Times New Roman','serif'"> </span>
D、<span style="font-size:16px;font-family:宋体"></span><span style="font-size:16px;font-family:宋体"></span><span style="font-size:16px;font-family:宋体">均匀控制</span><span style="font-size:16px;font-family:'Times New Roman','serif'"></span>
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