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问题 单项选择题 A1/A2型题

乳腺癌的声像图特征是（）。

A.边界不整，呈锯齿状，无包膜

B.内部呈低回声区

C.后方回声呈衰减暗区

D.肿块向周围组织及皮肤浸润

E.以上都是

答案

参考答案：E

选择题

下图为动物细胞平面结构，它不具有：

[ ]

A．细胞壁

B．细胞膜

C．细胞质

D．细胞核

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单项选择题

The purpose of the scope statement includes all but which of the following:

A) Provides a basis for future project decisions.
B) Establishes a contract between the project team and the customer.
C) Sets criteria to use to determine if a project or phase have been completed successfully.
D) Establishes project constraints and assumptions.
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