【单选题】缝纫机脚踏板机构是( )机构在生产中的应用。
【单选题】Disabled people are more respected. Even the government no longer____the belief that disabled people are improper as teachers.
【单选题】One reason we need government, even in a market economy, is that
A.
there are insufficient quantities of externalities in the absence of government.
B.
property rights become too entrenched in the absence of government.
C.
the invisible hand seldom leads to an efficient allocation of resources in any market
D.
the invisible hand, while powerful, is not perfect.
【单选题】Centuries ago, in Japan, the government even set up universities and hold ceremonies in memory of Confucius.
【单选题】近现代气象史时代经历了四次飞跃性发展,下列观测手段属于第二次飞跃发展的是( )。
D.
空间和地面大气遥感探测与气象信息技术系统日趋完善
【单选题】社区的职能主要包括( )、协助职能和监督职能。
【单选题】近现代气象史时代经历了四次飞跃性的发展,下列的观测手段和资料收集方法属于第三次飞跃的是( )。
【单选题】One reason we need government, even in a market economy, is that
A.
there is insufficient market power in the absence of government.
B.
property rights are too strong in the absence of government.
C.
the invisible hand is not perfect.
D.
Both a and b are correct.