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【单选题】
（ 38 ）关于远程登录服务的描述中，正确的是A.
）客户端需要实现 NVT ，服务端不需要实现 NVT
B.
）服务器端需要实现 NVT ，客户端不需要实现 NVT
C.
）客户端和服务器端都需要实现 NVT
D.
）客户端和服务器端都不需要实现 NVT
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举一反三
【单选题】According to the passage, what are the opportunity costs of a product?
A.
The amount of time and money spent in producing it.
B.
The opportunities a person has to buy it.
C.
The value of what could have been produced instead.
D.
The value of the resources used in its production.
【简答题】写出题1．20图所示各系统的微分或差分方程。 [*] 题1．20图
【单选题】According to the passage, what are the opportunity costs of a product?
A.
The amount of time and money spent in producing it.
B.
The opportunities a person has to buy.
C.
The value of what could have been produced instead.
D.
The value of the resources used in its production.
【单选题】Implicit costs are the opportunity costs of using the resources of _____
A.
outsiders
B.
owners
C.
banks
D.
retained earnings
【单选题】If opportunity costs are ignored:
A.
all firms will show accounting profits.
B.
all firms will appear to incur economic losses.
C.
firms will still make profit-maximizing production decisions.
D.
firms experiencing economic losses may appear to be profitable.
【多选题】以下有关道路运输相关法律法规框架的描述中正确的是___。( )
A.
我国道路运输相关法律法规包括针对道路运输制定的和与道路运输相关的法律、行政法规、部门规章、地方法规、行政规范性文件
B.
这些法律法规文件从道路运输综合管理、旅客运输、货物运输三大方面对从业行为进行规范
C.
驾驶员应该全面、系统地学习这些法律法规
D.
这些法律法规既是保证驾驶员从业行为合法性的前提，又是维护驾驶员权益不受侵犯的保障
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