游梁式抽油机调曲柄平衡操作中，若上冲程电流大，曲柄应向（）输出轴方向移动。 ["平行","垂直","接（靠）近","远离"]
It is important with all hydraulic systems to ensure that interlocking arrangements provided for pump or motor control levers are （） before the pump driving motor can be started. ["in the pert position","in the starboard position","in the neutral position","to be dismantled"]
要在Photoshop 7.0和ImageReady 7.0之间进行切换按快捷键（）。 ["Ctrl+Alt+M","Ctrl+Shift+M","Ctrl+Alt+Shift+M","Ctrl+M"]
内部专卖管理监督对卷烟经营人员行为的规范要求有哪些？
中国历史上第一个高度中央集权的封建国家是（）。 ["夏朝","西周","西汉","秦朝"]
为什么现在生产上养殖的鲢性成熟个体变小？
