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【单选题】
食品毒理学评价中,属于第二阶段实验是( )A.
急性毒性试验
B.
遗传毒性试验
C.
亚慢性毒性实验
D.
慢性毒性实验
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反馈参考答案：
举一反三
【判断题】Listen to the passage and decide if the following 4 statements are true or false. Giving praise can lead to better business motivation only due to its convenience. ( )
A.
正确
B.
错误
【单选题】在一张成绩表中,有学号、课程名、成绩、考试时间字段,如果要查询最近一次考试的"数据库技术"这门课的成绩情况,可使用以下语句来实现:()
A.
declare @date datetime select @date=max(考试时间) from 成绩表 where 课程名='数据库技术' select * from 成绩表 where 考试时间 =@date
B.
declare @date datetime select @date=max(考试时间) from 成绩表 where 课程名='数据库技术' select * from 成绩表 where 考试时间 =@date and 课程名='数据库技术'
C.
declare @date datetime select @date=max(考试时间) from 成绩表 select * from 成绩表 where 考试时间 =@date and 课程名='数据库技术'
D.
declare @date datetime select @date=min(考试时间) from 成绩表 where 课程名='数据库技术' select * from 成绩表 where 考试时间 =@date and 课程名='数据库技术'
【简答题】Guided by the that mankind is a community with a shared future, China works not only to protect its own people, but also step up international and regional cooperation to contribute its part to global...
【简答题】仿真测试完成后,参照P149页的图12-4截图 呼叫系统的发射与接收PCB截图
【判断题】Emperor Wu pushed strongly to build the Great Wall not only to increase its functions as the military defense,but also to “protect the newly-opened Silk Road.
A.
正确
B.
错误
【单选题】The best title for the passage is ______.
A.
Preparing the Ground for a Pump System
B.
Pros and Cons of the Ground-Source Heat Pump
C.
The Ground-Source Heat Pump
D.
It Works for Me!
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