皮皮学，免费搜题
登录
搜题
【单选题】
对甲基异丁苯用高锰酸钾氧化所得的主要产物为( )A.
CH 3 -苯环-COOH
B.
COOH-苯环-COOH
C.
COOH-苯环-C(CH 3 ) 3
D.
COOH-苯环-CH 2 COOH
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Many young researchers are finding solutions to problems that may __________. 查看材料
A.
a nearly 40-degree angle
B.
get on bikes
C.
a feather pillow
D.
fix more problems
E.
a super-strong battery
F.
benefit their community
【简答题】把四个边长为3厘米的正方形拼成一个大正方形。这个大正方形的周长是多少厘米？
【简答题】Many researchers believe, like crying does for small children, swearing helps ______.
【单选题】Some researchers believe that many patterns of nature are rules of their own and not affected by natural selection．
A.
making
B.
breaking
C.
following
D.
bending
【单选题】How many researchers does the passage mention? 查看材料
A.
Two.
B.
Three.
C.
Four.
D.
Five.
【单选题】女性，31岁。下雨淋雨受凉后出现发冷寒战，体温39℃，伴右侧胸痛，咳黄痰。胸透示右上肺野大片淡薄阴影。诊断初步考虑为肺炎球菌肺炎，首先需与以下相鉴别的是
A.
肺结核干酪性肺炎
B.
肺癌伴阻塞性肺炎
C.
肺栓塞
D.
肺真菌感染
E.
肺大泡继发感染
【简答题】把3个边长2厘米的正方形拼成一个长方形，这个长方形的长是______厘米，周长是______厘米．
相关题目：