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【单选题】
Excel中使用公式,当多个运算符出现在公式中时,由高到低各运算符的优先级是( )A.
括号、%、^、乘除、加减、&、比较符
B.
括号、%、^、乘除、加减、比较符、&
C.
括号、^、%、乘除、加减、&、比较符
D.
括号、^、%、乘除、加减、比较符、&
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举一反三
【单选题】They became friends again that day. Until then.they_ to each other for nearly two years
A.
didn't speak
B.
hadn't spoken
C.
haven't spoken
D.
haven't been spoken)
【单选题】She never dreamed of _____ a chance for her to meet her old friends again. [ ]
A.
there being
B.
there to be
C.
there was
D.
being
【简答题】41) Before ____ the house, you should get a surveyor____ over it. A) buying...looking B)having bought...to look C) buying...to have looked D) buying...to look 42)In some countries people favo...
【单选题】They became friends again that day. Until then they ______to each other for nearly two years.
A.
didn’t speak
B.
hadn’t spoken
C.
haven’t spoken
D.
haven’t been speaking
【单选题】使用示波器测试U341E型输入轴转速传感器波形时,下列说法错误的是( )。
A.
输入轴转速即涡轮转速
B.
该传感器波形为交流波形
C.
失速时波形的周期长.幅值小
D.
车速越高,波形的周期越短.幅值越大
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