随着催化裂化的反应时间的不断增加,下列变化正确的是()。A、焦炭产率上升 B、气体产 发布时间:2017-07-28 17:23 │ 来源:www.tikuol.com 题型:单项选择题 问题: 随着催化裂化的反应时间的不断增加,下列变化正确的是()。A、焦炭产率上升B、气体产率下降C、柴油产率上升D、汽油产率上升
题型:单项选择题 阅读理解。NameTelephone numberCar number ID card numberJim Green 523-4564AK168841012919690101Jack Smith13657047321YNA22212103419771202 Linda White13550295437WTS16834110019870904Zhang Liangyin028-82740403川A?DE45651012419811213 HanHuahua010-57432128京B ?AB38801010019890807Bob Smith238-4508EL5656017312197712091. There are(这里有) ______people(人). A. four B. five C. six D. seven 2. Smith is______family name. A. Jack's B. Bob and Jack's C. Bob's D. Jim’s 3. YNA222 is a ______number. A. telephone B. car C. ID card D. room 4. 34110019870904 is ______ID card number.A. Linda's B. Huahua's C. Liangyin's D. Bob’s 查看答案
题型:单项选择题 下面哪一个是最安全的防火墙系统()。A.Screened-hostfirewallB.Screened-subnetfirewallC.Dual-homedfirewallD.Stateful-inspectionfirewall 查看答案