调度操作指令有哪几种形式？
参考答案：
调度操作指令形式有：单项指令、逐项指令、综合指令。
Lin Feng is said ____ abroad, but I don’t know which country he studied in.
A．to study
B．to be studied
C．to have studied
D．to be studying
病历摘要：女，70岁。因腹胀半年，加重1月，B超示“盆腔囊性占位病变”来诊。查体：下腹部可扪及包块，边界欠请，质中等。做腹部CT检查。
3、鉴别诊断有哪些？
