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【多选题】
关于独立方案的经济评价，下列说法正确的有（ ）A.
对于常规投资项目来说，用NPV和IRR进行经济评价，其评价结论是一致的
B.
静态评价指标有总投资收益率、静态投资回收期和内部收益率等
C.
动态评价指标有净现值和净年值等
D.
当NPV≥0时，方案可行
E.
当Pt≥Pc时，方案可行
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【单选题】These goods emit flammable gases in contact with water.keep them dry
A.
Please keep the flammable goods away from water
B.
Please keep these goods away from the engine room
C.
Please keep these goods away from water
D.
Please keep these goods in liquid form
【单选题】These goods emit flammable gases in contact with water
A.
These goods shall be kept clean
B.
These goods shall be kept dry
C.
These goods shall be kept away from heat
D.
These goods shall be kept away from dust
【单选题】These goods emit flammable gases in contact water. Keep them dry.
A.
Please keep the flammable goods away from water
B.
Please keep these goods away from water.
【单选题】According to the information provided, which of the following descriptions of Europa would be accepted by both scientists?
A.
Europa has a larger diameter than does Jupiter.
C.
Europa has a suce made of rocky material. C.Europa has a suce temperature of 20°C.
D.
Europa is completely covered by a layer of ice.
【单选题】Which of the following is true according to this passage?
A.
Not until about 1960 did the word bionics come into being.
B.
Bionics is the study of the systems in animals.
C.
Bionics is the only study of the eyes and ears of some creatures.
D.
People didn't know much about the science of bionics until 1960.
【简答题】试编写一段程序，调用函数时可以传递参数。
【简答题】写一函数，求字符串的长度，并编写主函数。
【单选题】which word should not be stressed in the sentence “0n behalf of the whole team, I would like to thank you for your great support."？
A.
on
B.
behalf
C.
to
D.
I
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