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【单选题】
直线的倾斜角为0度时,则它的斜率为( )A.
不存在
B.
1
C.
0
D.
-1
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参考解析：
知识点：
皮皮学刷刷变学霸
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【简答题】右腹沟疝多见的原因
【简答题】Fire needs three things to burn: oxygen, fuel, and heat. Fuels can be wood, tinder, coal, or any other substance that will easily oxidize. Therefore, a fire can be stopped in three different ways, by ...
【单选题】Fire needs three things to burn: oxygen, fuel, and heat. Fuels can be wood, tinder, coal, or any other substance that will easily oxidize. Therefore, a fire can be stopped in three different ways, by ...
A.
Compare and Contrast
B.
Spatial
C.
Chronological
D.
Problem and Solution
E.
Cause and Effect
F.
Order of Importance / Sequence
【单选题】右腹沟疝多见的原因
A.
未闭的鞘状突为一条细小管道
B.
鞘状突下段闭锁而上段未闭
C.
鞘状突两端闭锁而中段不闭
D.
右侧睾丸下降迟于左侧
E.
腹内斜肌弓状下缘发育不全或位置偏高
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