皮皮学，免费搜题
登录
搜题
【多选题】
下列叙述自动车工作原理正确的是A.
切自动车床的工作特点为主轴以内弹簧夹头夹持棒料，作回转及轴向进给运动，刀具沿棒料的径向运动。
B.
若刀具静止，主轴箱送进，则为车削外圆，而主轴箱静止，刀具径向送进即为车槽、或切断，当二者同时作复合运动时，可完成车圆锥或表面等工作。
C.
机床的循环过程一般为主轴夹持棒料进行各种切削工作，然后切断。零件切断后。弹簧夹头松开，主轴箱退回。
D.
棒料依靠送料架中重锤的力量支持在切断刀上。主轴箱退回至原始位置后，弹簧夹头夹紧，然后切断刀退回，再开始下一个循环。当一根棒料用，通过送料架上及床身后面两个并联保险开关的作用，使机床自动停车，并能保证最后一个零件的完整。
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
【单选题】Which one is the correct understanding of the sentence " Two peas in a pod Like peanut butter and jelly"? ( )
A.
husband and wife
B.
close friends
C.
delicious food
D.
peanut and butter
【单选题】在业余无线电台中转发广播电台、互联网聊天、电话通话、其他电台的联络信号,这类行为的性质是:
A.
错误行为；违反“业余无线电台的通信对象应当限于业余无线电台”规定，因为通信中产生信息的一方不是通信业余无线电台本身
B.
正确行为；既然可以联络，不必要限制向话筒送什么内容
C.
如果转发的目的是进行技术调试、用转发信号作为测试信号的话，就是正常行为
D.
不算错误但也不值得提倡
【简答题】Ana_______(not like) peanut butter.
【单选题】I like _____ a lot, and my mother usually cooks it in different ways. [ ]
A.
fish
B.
butter
C.
potatoes
D.
noodles
【单选题】Sticky stuff like peanut butter was on the seats or door handles .
A.
把手，手柄
B.
处理
C.
操作
【单选题】-Would you like some butter with your bread? -________.
A.
Help yourself
B.
OK. Here you are
C.
I'm afraid I can't
D.
Yes, a little, please
【单选题】— Would you like some butter with your bread? — ____________.
A.
Not at all
B.
OK. Here you are
C.
That is right.
D.
Yes, a little, please
【单选题】If peanut butter and jelly are complements, but peanut butter and tuna fish are substitutes,
A.
an increase in the price of peanut butter will increase the demand for jelly.
B.
an increase in the price of peanut butter will decrease the demand for jelly.
C.
an increase in the price of peanut butter will decrease the demand for tuna fish.
D.
a decrease in the price of peanut butter will increase the demand for tuna fish.
【简答题】____(Stick)stuff like peanut butter was on the seats or door handles.
相关题目：