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【简答题】
两级放大电路如下图所示，已知三极管均为硅管，|U BE(on) |=0.7V，β=100，r bb' =200Ω。
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皮皮学刷刷变学霸
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【单选题】假设今天投资人融资40,000元买每股价值为40元的QF股票，保证金账户要求的原始保证金比例(initial margin)为50%，维持保证金比例(maintenance margin)为30%，请问当QF股价跌到多少元时会收到保证金催缴(margin call)?
A.
20.57
B.
24.57
C.
26.57
D.
28.57
【单选题】听力原文：M: What do you think of Professor Conrad's class? W: Well, his lectures are interesting enough, but I think he could choose more appropriate questions for the tests. M: I agree with you. What doe...
A.
She thinks his lectures are boring.
B.
She thinks his tests are too long.
C.
She doesn't like his choice of test questions.
D.
She doesn't think he prepares well enough.
【多选题】发出存货按先进先出法计价,其特点是( )。
A.
物价上涨时，发出存货成本偏低，利润偏高
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物价下跌时，发出存货成本偏低，利润偏高
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库存存货的成本接近市价
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发出存货的成本接近市价
【单选题】关于工程监理单位工作性质的说法,正确的是( )。
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工程监理单位接受业主的委托必须保证项目目标的实现
B.
工程监理单位在组织上不能依附于监理工作的对象
C.
工程监理单位从事监理工作的人员均应是注册监理工程师
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工程监理单位以独立的第三方身份处理业主和承包商的冲突
【多选题】发出存货按先进先出法计价，其特点是( )。
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发出存货的成本比较接近于其重置成本
B.
物价上涨时，避免虚增利润
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发出存货的成本与其重置成本差额较大
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期末结存数额比较接近实际
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He is not quite sure about it.
B.
He is interested in business.
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He needs the librarian's help.
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He needs a specific reference book.
【单选题】What are they discussing?
A.
Where to go for the summer holiday.
B.
Which place is more interesting.
C.
The countries they went to.
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【多选题】发出存货按先进先出法计价，其特点是( )。
A.
发出存货的成本比较接近于其重置成本
B.
物价上涨时，避免虚增利润
C.
发出存货的成本与其重置成本差额较大
D.
期末结存数额比较接近实际