粗铣时，由于（），为了保证合理铣刀寿命，铣削速度要比精铣时低一些。
A.产生热量多
B.切削力大
C.切削功率大
D.切削速度快
参考答案：A
协会工作人员不按《期货从业人员管理办法》规定履行职责，徇私舞弊、玩忽职守或者故意刁难有关当事人的，协会应当给予罚款处分。（）
WebSQL is a SQL-like（）language for extracting information from the web. Its capabilities for performing navigation of web （） make it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a（） , all the pages that can be reached from a given URL through （） that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common （） Interface.
WebSQL is a SQL-like（）language for extracting information from the web.
A．query
B．transaction
C．communication
D．programming
