肿块型胃癌声像图的描述，下列错误的是 A．肿块呈弱回声并突向_爱下问搜题

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问题单项选择题

肿块型胃癌声像图的描述，下列错误的是

A．肿块呈弱回声并突向胃腔

B．形态不规则

C．表面黏膜层隆起，不平整

D．一般境界较清楚

E．以上都不是

答案

参考答案：D

选择题

She thought I was talking about her daughter, _____, in fact, I was talking about my daughter.

A. whom
B. where
C. which
D. while

问答题简答题

什么叫发电机的进相运行和滞相运行？