题目内容
（请给出正确答案）
A.rotating cam
B.lever
C.brake shoe
D.rotor
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更多“In the internal expanding－band brake, the band inside of the brake drum is actuated by”相关的问题
设X为Banach空间，BL(X)是X上的有界线性算子的全体。对A∈BL(X)，令
证明定义expA的级数是绝对收敛的。再证明，若A，B∈BL(X)满足AB=BA，则
exp(A+B)=(expA)(expB)。
By joint efforts we can () both friendship and business.
A. increase
B. encourage
C. expand
D. extend
试证：如果φ(t)是x'=Ax满足初值条件φ(t0)=η的解，那么
φ(t)=[expA(t-t0)]η．
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A.The challenges facing East Asia．
B.The location for their new office．
C.Their expansion into the overseas market
D.The living expenses in Tokyo and Singapore．
What is learned about Twin Falls Hardware？
A．It plans to double its employees.
B．It has expanded the types of items it produces.
C．It has the industry's second-largest sales volume.
D．It recently purchased a new manufacturing facility.
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