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【单选题】
下列关于哮喘的说法中 错误 的是A.
气道炎症是哮喘发病的本质
B.
气道高反应性是哮喘的重要特征
C.
哮喘症状消失后可停用糖皮质激素吸入
D.
哮喘症状消失后可停用β 2 受体兴奋剂
E.
静脉注射茶碱类药物浓度不宜过高、速度不宜过快
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【简答题】陈先生是一名作家,在某杂志取得的稿酬为5k元,则需要缴纳的个人所得税为多少?
【单选题】判定一个循环队列 QU (最多元素为 m0 )为满队列的条件是 ()。
A.
front ！ = rear
B.
front= = （ rear+1 ） %m0
C.
front= = rear
D.
front ！ = （ rear+1 ） %m0
【多选题】协助办理离站手续这一阶段,地方导游员应做好以下哪些工作? ( )p92
A.
协助旅游者下车
B.
办理行李交接手续
C.
办理财务手续
D.
送别旅游者
E.
向旅游者及领队，全程导游员挥手告别
【单选题】Marginal benefit from a good is the ______.
A.
opportunity cost of producing one more unit of a good and the opportunity cost increases as production increases
B.
opportunity cost of producing one more unit of a good and the opportunity cost decreases as production increases
C.
benefit from consuming one more unit of a good and that benefit increases as consumption increases
D.
benefit from consuming one more unit of a good and that benefit decreases as consumption increases
【简答题】陈先生是一名作家,在某杂志取得的稿酬为 6.1 k 元,则需要缴纳的个人所得税为 ( ) 元
【单选题】Marginal benefit _________.
A.
is the total benefit that a consumer receives from consuming an assortment of goods and services
B.
from a good is the additional cost to a consumer of another unit of the good
C.
from a good increases as more of the good is consumed
D.
from a good reflects the maximum willingness to pay for another unit of it
【单选题】All of the following statements about marginal benefit are correct EXCEPT the marginal benefit of a good
A.
is the benefit a person receives from consuming one more unit of the good or service.
B.
is measured as the maximum amount that a person is willing to pay for one more unit of the good.
C.
is equal to zero when resource use is efficient.
D.
decreases as the quantity consumed of the good increases.
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