【简答题】The invention of the electric telegraph gave birth to the communications industry. Although Samuel B. Morse succeeded in the invention useful in 1837, it was not until 1843 that the first impor...
【单选题】The shock of the electric catfish is more unpleasant than that of the torpedo or electric eel.
【多选题】下面关于内连接的说法中, 描述正确的是
B.
使用 WHERE 子句可以实现内连接同样的功能
C.
内连接语法格式中的 INNER JOIN 不能略写为 JOIN
D.
内连接可以得到被连接的两个表中所有数据行的笛卡尔积
【简答题】Many foreign words and phrases have______ the English Language, (rich)
【简答题】One of the advantages of the gasoline car over the electric one is that the gasoline car is relatively ______ to refuel.
【单选题】The electric plates on the electric eel are supplied with nerves from its brain.
【单选题】The electric plates on the electric eel______.
A.
run along the length of its body
B.
are found on sides of its head
C.
are located in its head
【单选题】The electric locomotive benefits from the high efficiency of the electric motor. Additional efficiency can be gained from ( ).
B.
the regenerative braking
【简答题】A【51】of foreign words still look like foreign words; there are often expressions which【52】originally used by people who wanted to sound particularly well-educated. It was the desire to be scholarly th...
【简答题】The invention of the electric telegraph gave birth to the communications industry.Although Samuel B.Morse succeeded in the invention useful in 1837,it was not until 1843 that the first importan...