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【单选题】
浓度高于60%,持续超过多长时间则会发生氧中毒A.
1天
B.
2～3天
C.
5天
D.
7天
E.
半个月
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反馈参考答案：
举一反三
【单选题】Fo r th e purpos e o f calculatin g GDP , investmen t i s spendin g on
A.
stocks , bonds , an d othe r financia l assets.
B.
rea l estat e an d financia l asset s suc h a s stock s an d bonds.
C.
capita l equipment , inventories , an d structures , includin g househol d purchase s o f ne w housing.
D.
capita l equipment , inventories , an d structures , excludin g househol d purchase s o f ne w housing.
【单选题】Fo r purpose s o f calculatin g th e CPI , th e housin g categor y o f consume r spendin g include s th e cos t of
A.
shelter.
B.
fue l an d othe r utilities.
C.
househol d furnishing s an d operation.
D.
Al l o f th e abov e ar e correct.
【简答题】With all the progress of the last decades, it can be hard to see that there is still work to be done, or to remember what was so difficult before. Modern women may raise a chorus of complaints that th...
【多选题】在航空货运中，下列哪些商品是隐含危险品的物质（ ）。
A.
FRESH VEGETABLES
B.
HOUSEHOLD GOODS
C.
MACHINERY PARTS
D.
PHOTOGRAPHIC SUPPLIES
【判断题】道德用善恶标准判断和评价认得行为，善与恶、正义与非正义、公正与偏私、光荣与耻辱、诚实与虚伪等，都是道德对人们的行为进行褒贬评价时使用的基本概念和具体标准。
A.
正确
B.
错误
【简答题】What do you mix with bicarb soda and cloudy ammonia to make a general all-purpose household cleaner?
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