皮皮学，免费搜题
登录
搜题
【简答题】
可以用中间继电器来（）控制回路的数目。中间继电器是把一个输入信号变成为（）的继电器。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】对急救绿色通道叙述正确的是（ ）
A.
各个环节24小时均有值班人员
B.
各环节人员必须有两年以上急诊工作经验
C.
院内急会诊10分钟内到位
D.
纳入急救绿色通道的患者不需详细记录
E.
决定启动急救绿色通道由首次医护人员
【简答题】What has the governor of China’s central bank hinted in terms of tackling the economic problem?
【单选题】What are the two parts of the economic problem?
A.
economics explains many things, but only things that are related directly to money.
B.
natural resources are scarce but human-made resources are not.
C.
scarcity forces us to choose and choices are costly because we must give up other opportunities that we value.
D.
we have unlimited wants and unlimited resources.
【单选题】The economic problem caused by the depression in 1929 was eventually solved by____.
A.
World War II
B.
the New Deal
C.
World War I
D.
the establishment of CIA
【单选题】The real core of the economic problem is to:
A.
increase the amount of leisure time available to people.
B.
guarantee everyone on the planet a minimum level of food, shelter and clean water.
C.
allocate limited resources among competing uses.
D.
eliminate scarcity.
相关题目：
【简答题】What has the governor of China’s central bank hinted in terms of tackling the economic problem?