皮皮学，免费搜题
登录
搜题
【单选题】
发现人员触电时,应( ),使之脱离电源。A.
立即用手拉开触电人员
B.
用绝缘物体拨开电源或触电者
C.
用铁棍拨开电源线
D.
向周围人员求救
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】The twin English passions for gardening and long muddy walks may seem puzzling to foreigners, yet they are easily explained in terms of a favourite economist's concept: scarcity. Most other nations ha...
A.
real estate development.
B.
gardening expansion.
C.
hostility to scarcity.
D.
economic recession.
【单选题】"There is no such thing as a free lunch." This expression means
A.
no decision is cost-free.
B.
if Jan and Jim go out to eat lunch, one of them must pay for the lunch or the restaurant will call the police.
C.
while some actions involve a cost, others do not.
D.
that scarcity exists in some situations, but does not in others.
【单选题】Scarcity is
A.
our inability to satisfy all our wants.
B.
a situation that exists during economic recessions but not during economic booms.
C.
eliminated by choices.
D.
an economic problem only for poor people.
【单选题】Scarcity:
A.
occurs only in centrally planned economies.
B.
will likely be eliminated by technological progress.
C.
exists only in poor nations.
D.
occurs if there are insufficient resources to provide for human wants.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
