【单选题】For a nonrival good like pay-per-view television programs, the private market will lead to:
A.
production of too much of the good.
B.
consumption of too much of the good.
C.
consumption of too little of the good.
D.
outsourcing its production.
【单选题】支气管扩张患者施行体位引流时,错误的护理是
【单选题】把牛顿环装置(透镜的折射率为1.52)由空气中移到水中,则干涉条纹
【判断题】其他组成环不变,当某环减小时,封闭环却增大,这个环就是增环。( )
【判断题】尺寸链是由封闭环和组成环(增环、减环)组成的。()
【单选题】数控机床由穿孔带或磁带等控制介质、数控装置、机床和组成。
【单选题】支气管扩张患者在施行体位引流时,错误的护理理是
【单选题】An artificially scarce good is a good or service for which exclusion is _____ and which is _____ in consumption.
D.
not possible; nonrival
【单选题】A common resource is a good or service for which exclusion is _____ and which is _____ in consumption.
D.
not possible; nonrival
【单选题】A public good is a good or service for which exclusion is _____ and which is _____ in consumption.
D.
not possible; nonrival