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【判断题】
【 第七单元 】 可将电源反接制动过程总结为切正序、投反序、切反序三步操作。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】It is commonly argued that national defense is a public good. Nevertheless, the weapons used by the U.S. military are produced by private firms. We can conclude that
A.
resources would be used more efficiently if the government produced the weapons.
B.
resources would be used more efficiently if private firms provided national defense.
C.
weapons are rival in consumption and excludable, but national defense is not rival in consumption and not excludable.
D.
national defense is rival in consumption and excludable, but weapons are not rival in consumption and not excludable.
【单选题】In 1995 Martin Luther King, Jr. gained national ______ for his nonviolent methods used in a bus boycott in Montgomery.
A.
realization
B.
permission
C.
recognition
D.
revolution
【单选题】The experts must have used big data to make the national economies predictable. Without thehelp of big data, the ranking would be ()(不能预言的).
A.
predictable
B.
unpredictable
C.
speakable
D.
unspeakable
【单选题】Every minute is made good ______ of ______ for the coming national examinations.
A.
used…preparing
B.
use…to prepare
C.
useful…to prepare
D.
use…preparing
【简答题】存在点是指使用( )在屏幕上会出的点
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