【简答题】E—commerce involves exchanges among( ).
【单选题】All of the following were visions of e-commerce expressed during the early years of e-commerce except:
A.
a nearly perfect information marketspace.
B.
friction-free commerce.
D.
fast follower advantage.
【单选题】R134a 与R12的制冷剂系统中说法正确的( )
【判断题】将 R134a制冷剂加入R12系统中,由于R134a制冷剂与R12系统中的冷冻油不相溶,空调工作时,压缩机中的冷冻油被压出去后无法在随制冷剂返回,最后导致压缩机润滑不良而烧死。
【简答题】15 的因数有哪些? 15 是哪些数的倍数?
【单选题】假如你原来在政府部门上班,每年有10万元收入。现在,你决定辞职经商,比如经营餐馆。每年的全部收入是11万元,会计成本是10万元。 你这个决策正确吗?赚钱了吗?
【判断题】将 R134a制冷剂加入R12系统中,由于R134a制冷剂与R12系统中的冷冻油不相溶,空调工作时,压缩机中的冷冻油被压出去后无法再随制冷剂返回,最后导致压缩机润滑不良而烧死。
【单选题】Which of the following statements about e-commerce is true?
A.
E-commerce is technology in essence.
B.
E-commerce is website building.
D.
E-commerce is commerce in essence.
【单选题】Which of the following is not true of e-commerce?
A.
E -commerce ’ s Chinese name is 电子商务
B.
Nowadays e-commerce Internet penetration rate was 60%.
C.
To stay competitive, firms have searched for greater coordination and collaboration among supply chain partners to wring out the inefficiencies.
D.
E lectronic commerce offers no opportunities to both developing and developed countries.