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【简答题】
设n阶方阵A满足A 2 =E.证明:A必相似于对角矩阵.
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参考答案:
举一反三
【单选题】An axial piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned _____.
A.
radially from the shaft
B.
parallel to each other and to the shaft
C.
parallel to each other but at a right angle to the shaft
D.
at an angle to each other and to the shaft
【单选题】The function of the piston rings is to ________.
A.
help cool the piston by transferring heat from the piston to the cylinder wall
B.
provide a sliding seal between the piston and cylinder wall
C.
scrape oil off the cylinder wall as the piston moves down on the power and intake strokes.
D.
all of the above
【单选题】TCP 建立连接通过 几 次握手 ?
A.
不用握手,直接建立连接
B.
4
C.
2
D.
3
【简答题】英译汉: piston
【单选题】王昌龄最擅长的是( )。
A.
七言律诗
B.
五言律诗
C.
七言绝句
D.
五言绝句
【多选题】脾气虚证与脾阳虚证的鉴别点有哪些()
A.
浮肿与否
B.
有无食少便溏
C.
腹痛与否
D.
有无形寒肢冷
E.
有无身倦乏力
【多选题】脾气虚证与脾阳虚证的鉴别点有哪些?
A.
浮肿与否
B.
有无食少便溏
C.
腹痛与否
D.
有无形寒肢冷
E.
有无身倦乏力
【单选题】关于肺表面活性物质,下列哪项是正确的( )
A.
肺表面活性物质缺乏不是引起新生儿肺透明膜病的主要原因
B.
肺表面活性物质人工制剂优于天然制剂
C.
肺表面活性物质的主要成分为蛋白质
D.
肺表面活性物质在胎龄18-20周时开始产生,35~36周达肺成熟水平
E.
由肺泡Ⅰ型上皮细胞分泌产生
【单选题】Piston cooling fins are located
A.
atop the piston crown
B.
beneath the piston crown
C.
at the base of the piston skirt
D.
inside the cylinder liner cooling water jacket
【简答题】Engine is the power source of the automobile. Power is produced by the linear motion of a piston in a cylinder. 英译汉:
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