There is only one type of notice: written form.
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The written notice can be divided into two types: announcement and epistle.
A. 对
B. 错
People write notices to tell what is about to happen or what has happened.
A. 对
B. 错
灰色链霉菌发酵产物活性测定实验中的指示菌是
A. 枯草芽孢杆菌
B. 金黄色葡萄球菌
C. 灰色链霉菌
D. 米曲霉
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