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【简答题】
设A为Hermite矩阵，则PE方法中的矩阵S i 、M和N均为Hermite矩阵．
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举一反三
【单选题】The media can often help solve problems and ________ attention to situations ________help is needed.
A.
take；which
B.
draw；where
C.
pay；that
D.
draw；不填
【单选题】Help will come from the UN, but the help will be ___ near what is needed.
A.
everywhere
B.
somewhere
C.
nowhere
D.
anywhere
【单选题】'To help out' means 'to volunteer' or to give help where it ? [ ]
A.
need
B.
to need
C.
is needed
【简答题】The media can often help solve problems and _____ attention to situations ______ help is needed. A．take; which B．draw; where C．pay; that D．draw; /
【单选题】The media can often help solve problems and draw attention _____situations ________help is needed.
A.
in; that
B.
to; which
C.
in; where
D.
to; where
【多选题】为了实现响应中断后能够正常返回主程序,下列说法正确的是?
A.
响应中断请求时，把当前正在执行指令的地址压入堆栈。
B.
响应中断请求时，用户要编程保护现场。
C.
执行完中断服务程序后，要恢复现场与恢复断点。
D.
保护断点与恢复断点都是硬件自动完成的。
【简答题】Sometimes a doctor is needed to help the child lessen the anxiety in such ways as ______.
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