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【单选题】
What is the dual system of Germany vocational educational?A.
It combines apprenticeship in a company and vocational training in a school.
B.
It generally takes place in a secondary public school.
C.
It takes place over the same period of time on different days of the week or in blocks of several weeks.
D.
It does not charge tuition fees.
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皮皮学刷刷变学霸
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【单选题】某单位女工较多,滴虫性阴道炎发病率很高,为预防其传播工厂采取了很多措施。下列哪项措施是不必要的
A.
预防性服甲硝唑
B.
改坐厕为蹲厕
C.
改盆浴为淋浴
D.
相互不借用浴巾
E.
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