【简答题】()的特点是径向尺寸紧凑,刚性好,因其返回滚道较短,摩擦损失小。缺点是反向器加工困难。
【判断题】当集成运算放大器工作在非线性区时,输出电压不是高电平就是低电平。
【单选题】The reconstruction of a fossilized animal's external appearance is considered necessary in order to______.
A.
satisfy popular curiosity
B.
answer scientific questions
C.
establish its activities
D.
determine its eating habits
【单选题】在集成运算放大器(以下简称集成运放,且均为理想型集成运放)的两个工作区中,当集成运放工作在_______时,输出为正向或负向饱和电压。
【判断题】饭店必须时时处处考虑到客人的需要,为客人的利益而工作,全面地满足客人的合理需求,这正是酒店服务的真实含义所在。
【单选题】— When did Yao Ming _______ the Houston Rockets in the NBA? — I’m not sure. Was it in 2002?
【单选题】( )的特点是径向尺寸紧凑,刚性好,因其返回滚道较短,摩擦损失小。缺点是反向器加工困难。
【判断题】配合的基准制有 基孔制和基轴制两种。优先选用基轴制。
【单选题】The fossilized remains of a type of camel ______ a dog have been found in the Bad Lands to South Dakota.