Y3150是齿轮加工机床中-种滚齿机的型号( )
A. 对
B. 错
展成法加工齿轮是利用齿轮刀具与被切齿轮保持-对齿轮啮合运动关系而切出齿形的方法。()
A. 对
B. 错
Choose the most appropriate word or phrase to complete each of the following sentences.The _______ of her plays means that she is able to reach a wide audience.
A. capability
B. vulnerability
C. visibility
D. accessibility
Financial _______ on the company are preventing them from employing new staff.
A. conclusion
B. constraints
C. confidence
D. concentration