A.SELECT * FROM Persons WHERE FirstName LIKE 'Thomas' AND LastName LIKE 'Carter'
B.SELECT FirstName='Thomas', LastName='Carter' FROM Persons
C.SELECT * FROM Persons WHERE FirstName='Thomas' AND LastName='Carter'
D.SELECT * FROM Persons WHERE FirstName='Thomas' OR LastName='Carter'
A、动滑轮
B、定滑轮
C、从动轮
D、绳索