皮皮学，免费搜题
登录
搜题
【简答题】
为防止在灼烧时，因温度高导致试样中的水分急剧蒸发使试样飞溅和防止糖、蛋白质、淀粉等易发泡膨胀的物质在高温下发泡膨胀而溢出坩埚，在灰化前对试样应先进行（）。
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】The ice in the lake is as ____ as it was before.
A.
thin
B.
thinner
C.
thinnest
D.
the thinnest
【单选题】The ice in the lake is about one meter . It’s strong enough to skate on.
A.
long
B.
high
C.
thick
【单选题】The ice in the lake is as _____as it was before. . [ ]
A.
thin
B.
thinner
C.
thinnest
D.
much thinner
【单选题】The ice in the lake is about one meter . It’s strong enough to skate on. [ ]
A.
long
B.
high
C.
thick
D.
wide
【简答题】△G0为负值是_______反应，可以_______进行。
相关题目：
【单选题】The ice in the lake is as ____ as it was before.
A.
thin
B.
thinner
C.
thinnest
D.
the thinnest