透平暖机期间，压缩机应当（）。
A.加负荷
B.减负荷
C.空负荷运行
D.以上都对
参考答案：C
---- Do you know where the manager lives?
---- Yeah, but I have to _____________ the telephone book for his address.
A．search
B．consult
C．request
D．examine
关于骨软骨瘤的治疗，下列哪项是错误的（）
A.一般均需手术
B.若肿瘤过大才切除
C.若肿瘤生长较快才切除
D.若肿瘤影响功能才切除
E.肿瘤恶变应尽早手术
