【判断题】( )检查主轴机构的精度,不仅需检查静态条件下的精度,也需检查动态条件下的精度。
【单选题】最小最大方法适用的选址类型是: 1、单设施选址2、多工厂、仓库选址3、竞争性选址4、紧急服务选址
【判断题】专职导游人员是指在一定时期内被旅行社固定聘用,以导游工作为其主要职业的导游人员。
【单选题】锅炉燃烧器中二次风风量应占总风量的______。
【单选题】《龙岩市烟花爆竹燃放管理条例》从()起施行。
【单选题】Why do policemen feel separated from the rest of the world? ______.
A.
Because they feel superior to simple-minded people around them.
B.
Because they are suspicious of the people around them.
C.
Because they do not receive due support from society.
D.
Because they find people insincere to them.