【判断题】制动带是衬有半金属或有机摩擦材料的简单挠性金属带。()
【判断题】喷涂机器人广泛用于汽车、仪表、电器、喷釉等工艺生产部门。
【单选题】Can you draw a house/horse?
【单选题】Can you draw a ______?
【简答题】Can you draw a Family Tree?
【单选题】Can you draw a _____? [音频]
【单选题】Before you pick up your phone, you should be mentally prepared. Which mental status is not good before you make a business call?
A.
You feel positive about the call.
B.
You take this phone call as a serious thing.
C.
You feel nervous before you make the call.
D.
You think you are responsible for this call.
【简答题】软齿面齿轮传动设计时,为何小齿轮的齿面硬度应比大齿轮的齿面硬度大 30 ~ 50 HBS ?