【简答题】What enabled the earliest balloons to fly? [A] Gas produced by metal and coal. . [B] Air kept hot by burning coal. [C] Hydrogen heated by a. gas burner. [D] Natural gas carried in a metal container.
【单选题】下列哪个选项不属于新的电子商务环境下网络营销新特点.()
【单选题】What has enabled the volunteers to rescue all the remaining whales on the beach?
A.
The tide rising at noon.
C.
Feverish rescue efforts.
【单选题】通过消除、降低和模拟目标的灯光与音响暴露征候,以隐蔽目标或迷惑敌人所实施的一种伪装方式为()
【单选题】What enabled Abraham Lincoln to succeed?
【单选题】What enabled Lincoln to succeed despite all the misfortunes?
B.
His educational background
【单选题】What is true about version-enabled tables?()
A.
The unit of versioning is the schema.
B.
It is possible to version enable a table pertaining to SYS.
C.
There are as many segments as versions for the same base table.
D.
It is possible to create workspaces if there is no version-enabled table in the database.