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【单选题】
能使 转化为 ,可选用的试剂是()
A.
Na
B.
NaHCO3
C.
NaCl
D.
NaOH
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参考解析:
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举一反三
【单选题】Jenny likes to _____________ a picture. [     ]
A.
drawing
B.
draws
C.
draw
D.
draw to
【单选题】Many girls are afraid ______ dogs. [     ]
A.
at
B.
to
C.
about
D.
of
【单选题】下列方法按任务分类的是
A.
仲裁分析与例行分析
B.
化学分析与仪器分析
C.
常量分析与微量分析
D.
定性分析、定量分析和结构分析
【判断题】热电阻的线路电阻配制应包括热电阻本身
A.
正确
B.
错误
【单选题】局部地区通信网络简称局域网,英文缩写为
A.
WAN
B.
MAN
C.
SAN
D.
LAN
【简答题】draw a picture
【单选题】Although many dogs are kept alone, they prefer to stay within a group of dogs.
A.
Y
B.
N
C.
NG
【简答题】Americans use many expressions with the word “dog”. People in the United States love their dogs and treat them well. They take their dogs for walks, let them play outside and give them good food and m...
【单选题】局域地区通信网络简称局域网,英文缩写为( )
A.
WAN
B.
LAN
C.
SAN
D.
MAN
【单选题】Many girls go to your house. They bring all their pet dogs. In all, there are 22 heads and 72 feet. How many girls and dogs are there in the room? [     ]
A.
6 girls and 16 dogs
B.
7 girls and 15 dogs
C.
8 girls and 14 dogs
D.
9 girls and 13 dogs
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