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问题 多项选择题

有关多胎妊娠的超声和临床表现，下列哪几项是正确的

A．多胎妊娠中双胎多见

B．早产发生率高

C．围产期死亡率高

D．多胎妊娠孕妇并发症多

E．多胎妊娠难以在早孕期显示

答案

参考答案：A,B,C,D

填空题

主页是个人或机构的基本信息页面，它一般包含的元素有文本、图像、表格和______。
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单项选择题

Your company's project review committee (PRC) meets quarterly to review any project with a budget exceeding $2 million. You recently were promoted to senior project manager and were assigned one of these largest projects, the development of a next-generation, computer-aided manufacturing process. The PRC asked you to present the project's objectives, work content, and deliverables at its next meeting. Accordingly, you need to prepare which one of the following documents

A) project charter.
B) product description.
C) scope statement.
D) WBS.
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