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【单选题】
以下哪一项是数字通信的优势。A.
物理链路带宽要求低
B.
无中继传输距离远
C.
信号容易再生
D.
信号衰减小
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】老年人合理选药包括( )
A.
了解老年人的病史、用药史及目前用药情况
B.
做出正确诊断，明确用药目的
C.
选择疗效肯定，副作用较小的药物
D.
尽量减少用药种类及
E.
以上都对
【单选题】下列关于合理用药哪个说法是错误的()
A.
合理用药包括安全、有效、经济三个方面
B.
安全是使患者承受最小的治疗风险，获得最大的治疗效果
C.
有效是合理用药的关键
D.
经济是指价格越低的药品越经济
【单选题】合理用药包括的要素是：
A.
安全性、有效性、经济性和适当性
B.
有效性、科学性、经济性和适当性
C.
科学性、有效性、方便性和经济性
D.
安全性、科学性、有效性和适当性
E.
安全性、方便性、经济性和适当性
【多选题】Which of the following is a valid method for defining a seed metric？（Choose all that apply.）（）
A.
The default-metric command configured under the appropriate interface
B.
The metric parameter in the network command of a routing process
C.
The metric parameter in the redistribute command
D.
The default-metric command
E.
A route-map containing a seed command
F.
A route map containing a metric command
【单选题】对于IP地址为20916的主机来说，其网络号为(42)。
A.
202. 93. 120
B.
202. 93. 120. 6
C.
202. 93. 120. 0
D.
6
【多选题】A Chinese Company has exported 50 metric tons of wheat to a foreign merchant. The contract stipulates that the quantity as 50 metric tons with 5% more or less. When the seller actually delivers 2 metr...
A.
take delivery of the 52 metric tons and pay for all the goods
B.
refuse to take delivery of all those 52 metric tons of the goods
C.
only refuse to take delivery of the excess quantity, i.e, the 2 metric tons
D.
takes delivery of all or part of the excess quantity, however he does not need to pay for it
E.
take delivery of all or part of the excess quantity and pay for it at the contract rate
F.
take delivery of all or part of the excess quantity, however he can only pay for it at 50% of the contract price
G.
take delivery of the 52 metric tons and pay for all the goods, however he can choose to pay at the contract rate or at the current rate
【简答题】USD200 per metric ton including 2% commission.
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