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【单选题】
阿司匹林与三氯化铁试液反应生成紫堇色,是因为阿司匹林结构中具有()A.
羧基
B.
酚羟基
C.
氨基
D.
苯环
E.
酯键水解产生水杨酸
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】钢筋混凝土柱帽的工程量( )。
A.
按图示尺寸以m3计算并入板工程量内
B.
按图示尺寸以m3计算并入柱工程量内
C.
按图示尺寸以m3计算执行小型构件子目
D.
可忽略不计
【单选题】He knows that ________ is time that he ________. [ ]
A.
it; quits smoking
B.
it; quitted smoking
C.
this; should quit to smoke
D.
that; quitted to smoke
【简答题】They are trying to ______ (popular) their new method of farming.
【判断题】Tom quitted farming. He moved to town, but found that he was the only Lutheran in his new little town of Catholics. That was okay, but the neighbors had a problem with his barbecuing beef every Friday...
A.
正确
B.
错误
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