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【单选题】
下列关于检查口和清扫口的作用及设置要求中，正确的是( )。A.
检查口和清扫口是安装在排水管上用作检查和双向清通排水管的附件
B.
铸铁排水设置的清扫口应与管道的材质相同
C.
排水立应设检查口，排水横应设清扫口不得设检查口
D.
排水立字，在该层管的上部应设置检查口
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举一反三
【单选题】分离定律的实质是
A.
子2代出现性状分离
B.
子2代出现性状分离比为3:1
C.
等位基因随同源染色体分离而分开
D.
测交后代性状分离比为1:1
E.
子2代性状分离比为1:1
【单选题】What do we mean by being 'talented' or 'gifted'? The most obvious way is to look at the work someone does and if they are capable of significant success, label them as talented. The purely quantitativ...
A.
Y
B.
N
C.
NG
【简答题】我国人口老龄化的主要特点有哪些
【单选题】The most gifted of the “university wits” was ____.
A.
Lyly
B.
Peele
C.
Greene
D.
Marlowe
【简答题】Human beings are the most intelt of all animals because we are gifted with the ability to think and reason logically. Scientists and even common people with special intelce have made a lot o...
【单选题】基因分离定律的实质是 [ ]
A.
F 2 中性状分离比为3：1
B.
F 2 中出现性状分离
C.
测交后代的性状分离比为1：1
D.
等位基因随同源染色体的分开而分离
【单选题】From the passage, we can conclude that ______.
A.
most of the gifted children became white collars
B.
half of the gifted followed up graduated from all colleges
C.
each of the talented published at least one article
D.
bright men got higher income than bright women
【简答题】Human beings are the most intelt of all animals because we are gifted with the ability to think and reason logcally. Scientists and even common people with special intelce have made a loto...
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