【单选题】通过 SQL,从 “actor” 表中选取 "FirstName" 列的值等于"John" 的所有记录的表述正确的是( )。
A.
SELECT * FROM Actor WHERE FirstName='John'
B.
SELECT [all] FROM Actor WHERE FirstName LIKE 'John'
C.
SELECT * FROM Actor WHERE FirstName LIKE 'John'
D.
SELECT [all] FROM Actor WHERE FirstName='John'
【单选题】GB/T3805-2008特低电压限值中规定,在正常环境下,正常工作时工频电压有效值的限值为( )V。
【单选题】GB/T3805-2008特低电压限值中规定,在正常环境下,正常工作时工频电压有效值的限值为 V。
【单选题】下列描述带绦虫卵形态特征属于错误的是()
【单选题】James told me the car was in good condition and I was stupid enough to it.
【单选题】通过 SQL,从 “actor” 表中选取 "FirstName" 列的值等于"John" 的所有记录的表述正确的是()。
A.
SELECT [all] FROM Actor WHERE FirstName='John'
B.
SELECT * FROM Actor WHERE FirstName LIKE 'John'
C.
SELECT [all] FROM Actor WHERE FirstName LIKE 'John'
D.
SELECT * FROM Actor WHERE FirstName='John'
【单选题】国家标准GB/T 3805-2008 《特低电压(ELV)限值》规定了特低电压的系列,将特低电压额定值的等级规定为:( )
A.
42V 、 38V 、 26V 、 14V 和 8V
C.
42V 、 36V 、 24V 、 12V 和 6V
D.
48V 、 40V 、 24V 、 12V 和 4V
【单选题】I can’t leave. She told me that I____________ stay here until she comes back.
【单选题】James told me the car was in good condition and I was stupid enough to __________ it
【单选题】通过 SQL,从 "Actor" 表中选取 "FirstName" 列的值以 "a" 开头的所有记录的表述正确的是()。
A.
SELECT * FROM Actor WHERE FirstName LIKE 'a%'
B.
SELECT * FROM Actor WHERE FirstName='a'
C.
SELECT * FROM Actor WHERE FirstName LIKE '%a'
D.
SELECT * FROM Actor WHERE FirstName='%a%'