Given that an investor’s utility function is u=ln(w), he faces a gambling with an entry fee of 18 yuan: 10% probability to get 90 yuan, 90% probability to get 10 yuan, then this investor will: A: Accept this gambling and pay an entrance fee of 90 yuan B: Refused this gambling, but if the entry fee is less than 12.46 yuan, will accept this gambling C: Reject this gambling, no matter how much the entry fee is reduced D: Reject this gambling, but only accept the gambling if the entry fee drops to 5.54 yuan

海顿活了几岁？（） A: 77 B: 57 C: 67 D: 90

通常无烟煤的碳含量是（ ）。 A: 60%~77% B: 75%~80% C: 90%~98% D: 85%~90%

IPv6地址 "2016:AFFE:0000:0FEE:0000:0000:000E:FE00" 的最简形式是？ A: 2016:AFFE::FEE::E:FE00 B: 2016:AFFE:0:FEE::E:FE00. C: 2016:AFFE::FEE:0:0:E:FE00 D: 2016:AFFE:0:FEE::E:FE

There is a referral fee besides a per-item fee fee for individual sellers to pay.( )

第三次中药资源普查结果显示药用植物所占比列约为：（ ）。 A: 90% B: 77% C: 80% D: 85% E: 87%

/ananas/latex/p/1802

c__f____ n. 咖啡 A: a,ee B: a,fee C: o, fee D: o, ee

请找出系统文件“SOFTWARE",请问操作系统的安装日期是?()<br/>(答案格式 -“世界协调时间":YYYY-MM-DD<br/>HH:MM UTC) A: 2018-10-25 08:08 UTC B: 2018-10-25 08:09 UTC C: 2018-10-25 08:10 UTC D: 2018-10-25 08:11 UTC E: 2018-10-25 08:12 UTC

世界上第一部《医学伦理学》于（ ）年出版。 A: 1801 B: 1802 C: 1803 D: 1804 E: 1805