题目内容

国民收入决定理论认为国民收入均衡水平决定于( )

A. 总收入
B. 总投资
C. 总需求
D. 总供给

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假设某经济社会的消费函数为C=100+0.8Y，投资为50（单位均为亿元），求均衡收入、消费和储蓄

某企业2018年第一季度产品生产预算为500件，单位产品材料用量8千克/件，期初材料库存量70千克，第一季度还要根据第二季度生产耗用材料的10%安排季末存量，预计第二季度生产耗用750千克材料。材料采购价格预计12元/千克，则该企业第一季度材料采购的金额为（）

A. 40050
B. 39950
C. 40000
D. 41450

Many people use the internet to mask anxiety, depression, or other mental illness. "Mask" here means___

A. to hide feeling
B. a coveringfor part of the face
C. something that covers your face and has another face painted on it.

Many people, especially those who do not have a companion, interact online to fulfill a void that causes them to feel lonely. "void" here means____

A. avoid
B. a large empty space
C. not valid or legal