皮皮学，免费搜题
登录
搜题
【简答题】
由于 T68镗床卧式镗床的运动部件较多,为了防止在工作台或主轴箱自动快速进给将主轴进给手柄扳到自动快速进给的快速误操作从而使镗床或刀具损坏,设置了工作台和主轴箱进给手柄有机械联动的位置开关 和主轴箱上装的另一个位置开关 ,它与主轴进给手柄有机械联动,SQ1和SQ2起到 作用。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】But he is having a nice time there. He has a comfortable
【单选题】Almost all of his time ______ experiments, he has no time to visit his parents.
A.
devoted to do
B.
devoted to doing
C.
devoting to doing
D.
is devoted to doing
【单选题】Almost all of his time ______ experiments, he has no time to visit his parents.
A.
devoted to do
B.
devoting to doing
C.
devoted to doing
D.
is devoted to doing
【单选题】All her time ________ experiments, she has no time for films.
A.
devoted to do
B.
devoted to doing
C.
devoting to doing
D.
is devoted to doing
相关题目：