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【多选题】
《中华人民共和国畜牧法》规定，从事畜禽养殖，不得有下列哪些行：( )A.
违反法律、行政法规的规定和国家技术规范的强制性要求使用饲料、饲料添加剂、兽药
B.
使用未经高温处理的餐馆、食堂的泔水饲喂家畜
C.
在垃圾场或者使用垃圾中的物质饲养畜禽
D.
法律、行政法规和国务院畜牧兽医行政主管部门规定的危害人和畜禽健康的其他行为
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举一反三
【简答题】 在单相桥式整流电路中,变压器次级电压 V 2 =120V (见下图),在未接滤波电容 C 时负载两端电压 V L 是多少伏?加了滤波电容并在空载情况下输出的直流电压最大值可达多少伏,此时整流二极管实际承受的反向电压是多大?
【单选题】The example of the man shows an ability to ______.
A.
avoid traffic accidents
B.
judge the good and evil of a person
C.
know about the events that are happening some distance away
D.
sense a danger that will actually happen later on
【简答题】肘关节的关节面有三对,包括:_______、________和_______。
【多选题】施工单位在采用( )时,必须对作业人员进行专门的安全生产教育培训,让其了解不安全因素,学会危险辨识,并采取保证安全的防护措施,以防止事故发生。
A.
新技术
B.
新思想
C.
新工艺
D.
新设备
E.
新材料
【简答题】What do most parents expect of their children in preschools? A) The ability to get along with other children B) The to learn what they like C) Enjoyment of free play D) Good academic performan...
【简答题】A．The ability to read different books in different ways. B．The ability to think actively in reading. C．The ability to raise and answer questions. D．The ability to read quickly.
【简答题】A．It can affect the ability of finding information. B．It decides the ability of reading newspaper. C．It can affect the ability to earn a living. D．It decides the pleasure of reading.
【单选题】A set of genes play a role in learning to read and do math, but this ability is not just gene-driven,【C1】______schooling and help from parents are also vital【C2】______. Early mathematical ability and ...
A.
as
B.
so
C.
though
D.
if
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