说一说三相异步电动机型号：Y112M-4中各符号的意义 。
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Task 1 Complete the following sentences with noun clauses.1. Go and see _________（去看看是谁）.
A. who is he
B. who he is
C. who are they
D. who it is
2.（ 她不明白的） was why fewer and fewer students were interested in her lessons.
A. What she couldn't understand
B. That she couldn't understand
C. Because she couldn't understand
D. Why she couldn't understand
无排卵性异常子宫出血常见于
A. 育龄期妇女
B. 流产后女性
C. 分娩后产妇
D. 不孕症病人
E. 青春期女性
关于无排卵性异常子宫出血病人主要的治疗方法,下列正确的是
A. 随访观察
B. 加强营养
C. 腹腔镜手术
D. 性激素治疗
E. 诊断性刮宫
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