皮皮学，免费搜题
登录
搜题
【判断题】
埋弧自动焊焊剂颗粒度过大,不利于熔池保护,易产生气孔。A.
正确
B.
错误
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
【单选题】Scarcity is a condition that exists when
A.
there is a fixed supply of resources.
B.
there is a large demand for a product.
C.
resources are not able to meet the entire demand for a product.
D.
All of the above.
【简答题】技术创新的类型有哪些？
【单选题】As described in Okin’s chapter, traditionally, what are the two conditions under which justice becomes an important ideal or goal?
A.
When there is love within the family, and when there are sufficient goods to share.
B.
Scarcity of goods, and lack of a common aim or goal.
C.
Whenever any kind of inequality or need exists.
D.
The demands of justice are always present because God commands that all people are treated equally.
【单选题】What must follow when scarcity exists?
A.
Consumers have to make choices.
B.
Governments are unable to supply public goods.
C.
Producers must be misallocating resources.
D.
Workers must be earning low wages.
【简答题】解下列方程组、不等式组： （1） ； （2）﹣3≤ <1．< /div>
相关题目：