题目内容

______is the capital city of Ontario, which is also the multicultural, entertainment, financial, and business capital of Canada.

A. Ottawa
B. Toronto
C. Quebec
D. Montreal

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属于高压压力容器的是()。
A1.5MPa
B2.05MPa
C10MPa
D205MPa

换热器因水质不好或油品杂质多而形成水垢及油垢的结焦沉淀,一般应用哪种清理方式﹙ ﹚。
A机械清理
B高压水清理
C冲洗
D化学清洗

lyophilized products for injection

sterile divided products

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