【单选题】下列实验操作与预期实验目的或所得实验结论一致的是( ) 选项 实验操作 实验目的或结论
A.
向AlCl 3 溶液中加入过量的氨水,过滤,洗涤,干燥,加热灼烧 制取Al(OH) 3
B.
将浓硫酸与碳混合加热,生成的气体通入足量的澄清石灰水 检验气体产物中的CO 2
C.
NaHCO 3 溶液与NaAlO 2 溶液混合产生白色沉淀 酸性:HCO 3 - > Al(OH) 3
D.
将SO 2 通入品红溶液中,品红溶液褪色,加热褪色后的品红溶液,溶液恢复红色 验证亚硫酸的不稳定性
【单选题】平原君赵胜者,赵之诸公子也。诸子中胜最贤,喜宾客,宾客盖至者数千人。平原君相赵惠文王及孝成王,三去相,三复位,封于东武城。 平原君家楼临民家。民家有躄者,盘散行汲。平原君美人居楼上,临见,大笑之。明日,躄者至平原君门,请曰:“臣闻君之喜士,士不远千里而至者,以君能贵士而贱妾也。臣不幸有罢癃之病,而君之后宫临而笑臣,臣愿得笑臣者头。”平原君笑应曰:“诺。”躄者去,平原君笑曰:“观此竖子,乃欲以一笑之...
B.
民困兵尽, 或 剡木为矛矢 或 师焉,或不焉
C.
赵亡 则 胜为虏,何为不忧乎 于其身也, 则 耻师焉
D.
使秦破赵,君 安 得有此 固一世之雄也,而今 安 在哉
【单选题】Which of the following is not considered one of the key areas of the front office operation? ( )
E.
All of the above are key areas of the front office operation
【单选题】Where should staff leave office cars?
A.
In front of the office.
B.
At the back of the building.
【单选题】— Where is the post office? — It’s _____ the hospital.
【单选题】What is the difference between front and back office systems?
A.
Front office systems are external systems; back office systems are internal.
B.
Front office systems are Web based; back office systems are built on database systems.
C.
Front office systems process information in the beginning of a customer's transaction; back office systems process information at the end of the customer's transaction.
D.
Front office systems focus on getting the sale; back office systems focus on follow-up.
【简答题】(1)如图所示是用来研究____________; (2)A 实验中如何应用控制变量的方法?____________________; (3)B 实验中要观察___________________________; (4)C 实验中研究出的结论是______________________。
【单选题】Front office employees communicate ______ themselves by using a front office ______.
【单选题】平原君赵胜者,赵之诸公子也。诸子中胜最贤,喜宾客,宾客盖至者数千人。平原君相赵惠文王及孝成王,三去相,三复位,封于东武城。 平原君家楼临民家。民家有躄者,盘散行汲。平原君美人居楼上,临见,大笑之。明日,躄者至平原君门,请曰:“臣闻君之喜士,士不远千里而至者,以君能贵士而贱妾也。臣不幸有罢癃之病,而君之后宫临而笑臣,臣愿得笑臣者头。”平原君笑应曰:“诺。”躄者去,平原君笑曰:“观此竖子,乃欲以一笑之...