搜题请搜索小程序“爱下问搜题”
问题 单项选择题

以下不符合猩红热皮疹特点的是：()

A．最先出现于颈部、腋下、腹股沟

B．皮肤皱褶处可见帕氏线

C．可见口周苍白圈

D．面部潮红，可见红色水泡

E．疹退后有脱皮，无色素沉着

答案

参考答案：D

填空题

根据课文内容填空。

    Wang Bing is 1._____ an 2._____ to his 3._____ friend, Tom. Gao San wants to 4._____ table

tennis 5._____Wang Bing. But Wang Bing is 6._____ now. Who is Tom? Tom is an 7._____ boy.

He 8._____ in a small 9._____ near 10._____. He 11._____ English, Maths, Science and Art. He

12._____ study Chinese. He usually 13._____ on Sundays. He 14._____ and 15._____ very well.
查看答案
选择题

设NA为阿伏加德罗常数，则下列说法中正确的是

A．常温常压下，1mol氨基(―NH2)所含有的电子总数为9NA

B．常温常压下，等体积等物质的量浓度的Na2S溶液和Na2SO4溶液的阳离子总数相等

C．在31g白磷分子中含有NA个P―P键

D．硬脂酸、软脂酸不是乙酸的同系物
查看答案