在MySQL中,InnoDB存储类型的表不支持外键。
A. 对
B. 错
在MySQL中,MyISAM存储类型的表支持外键。
A. 对
B. 错
Which part(s) is/are omittable in an informal letter?
A. Return address
B. Closing
C. Signature
D. Greeting
E. Date
Which parts does a formal letter usually include?
A. Sender's address.
B. Dateline.
C. Inside address.
D. Salutation.
E. Body.
F. Complimentary close.
G. Signature.