皮皮学，免费搜题
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搜题
【单选题】
下列鉴别方法不可行的是A.
用带火星的木条鉴别空气和氧气
B.
用水鉴别硝酸铵和氢氧化钙两种固体
C.
用燃烧的方法鉴别羊毛纤维和棉纤维
D.
用熟石灰粉末鉴别硫酸铵和氯化铵两种化肥
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】循环队列用数组A[0..m-1]存放其元素值,已知其头尾指针分别是front和rear ,则当前队列的元素个数是_______。
【单选题】如某监控机房显示设备屏幕选用14英寸显示器，则操作者与显示屏幕之间的距离宜为（）
A.
1070—1420mm；
B.
1420—2130mm；
C.
2130—2490mm；
D.
2490—2830mm。
【单选题】听力原文：W: Are you sure this is the fight way to the laboratory? I can't afford to be late. M: Don't worry. We'll be there in no time. Q: What does the man mean? (17)
A.
He has never been to the laboratory.
B.
He wants to stop and ask for directions.
C.
The woman won't be late.
D.
The program in the laboratory has already begun.
【简答题】制造费用的范围包括哪些内容?一般应设立哪些费用项目?
【简答题】制造费用包括哪些内容?
【单选题】听力原文：W: Are you sure this is the right way to the laboratory? I can't afford to be late. M: Don't worry. We'll be there in no time. Q: What does the man mean? (17)
A.
He has never been to the laboratory.
B.
He wants to stop and ask for directions.
C.
The woman won't be late.
D.
The program in the laboratory has already begun.
【单选题】— Here is a ticket to Avatar . _____, you had better not be lat e . —Thank you. I won’t.
A.
By the way
B.
Of course
C.
What’s more
D.
In the end
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