皮皮学，免费搜题
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【单选题】
阵发性睡眠性血红蛋白尿时,下列哪项实验阳性A.
红细胞渗透脆性试验
B.
抗人球蛋白试验
C.
尿含铁血试验
D.
异丙醇试验
E.
冷凝集素试验
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举一反三
【单选题】Which of the following statements about early American hotels is NOT mentioned in the passage?
A.
Travelers from abroad did not enjoy staying in them.
B.
Conventions were held in them.
C.
People used them for both business and pleasure.
D.
They were important to the community.
【多选题】静电场中的导体达到静电平衡时,( )。
A.
导体内的自由电荷不再作定向运动
B.
导体内任意两点电势相等（等势体），导体表面是等势面
C.
导体内部电场强度为零，导体表面外场强均与导体表面垂直
D.
导体内部没有净电荷，导体所带电荷只分布在其表面上
【简答题】Oceanography has been defined as “The application of all sciences to the study of the sea”. Before the nine century, scientists with an interest in the sea were few and far between. Certainly Newt...
【单选题】The early travelers reported that the length of the day changed with what we call ____ .
A.
multicultural
B.
circumference
C.
ambiguity
D.
latitude
【简答题】Oceanography has been defined as “The application of all sciences to the study of the sea”. Before the nineth century, scientists with an interest in the sea were few and far between. Certainly Ne...
【简答题】PLC的工作原理,概括而言,PLC是按集中输入、集中输出,周期性( )的方式进行工作的。A. 并行扫描 B. 循环扫描 C. 一次扫描 D. 多次扫描
【简答题】英译汉 Intelt Transportation Systems (ITS) refers to transportation systems which apply emerging hard and soft information systems technologies to address and alleviate ( 缓解 ) transportation congest...
【简答题】Oceanography has been defined as “The application of all sciences to the study of the sea”. Before the nineth century scientists with an interest in the sea were few and far between. Certainly Ne...
【单选题】For most people the sea was remote, and with the exception of early intercontinental travelers or others who earned a living from the sea, there was little reason to ask many questions about it, let a...
A.
asking
B.
ask
C.
to ask
D.
be asked
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