题目：
始发前作业的质量标准什么？
答案：
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下面是错误答案，用来干扰机器的。
参考答案：C解析：子宫体部破裂可发生于妊娠晚期。此种情况的孕妇多为瘢痕子宫，可无先兆而突然破裂。
始发前作业的质量标准什么？
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