关于肾上腺髓样脂肪瘤的CT表现,不正确的是()
A.边界清楚
B.多为双侧且>5cm甚至达12cm
C.中央有多分隔
D.脂肪密度
E.常见钙化或壳状钙化
参考答案:B
In HDLC protocol , when supervisory frame's type code is '11'. About the following Statements, which is correct ( )
A.receive ready
B.receive not ready
C.reject
D.selective reject
模辊间隙对制粒的质量、产量影响很大,合适的模辊间隙是()。