A. 正确 B. 错误
A. by budding through internal cellular membranes 在细胞内膜出芽 B. by synthesis 通过合成 C. by assembling 通过组装 D. by budding through the plasma membrane 在原生质膜出芽
ALTER TABLESPACE example BEGIN BACKUP B. ALTER TABLESPACE example END BACKUP C. ALTER TABLESPACE example END D. ALTER TABLESPACE example BEGIN