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【单选题】
我军政治工作的三大原则是()。A.
政治民主、经济民主、军事民主。
B.
坚定正确的政治方向、灵活机动的战略战术、艰苦朴素工作作风。
C.
官兵一致、军民一致、瓦解敌军。
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【简答题】ORP 电极在选择上应注意哪些方面?
【单选题】听力原文： The United Nations celebrated the 60th anniversary of its Charter on Monday with speakers addressing the UN General Assembly. UN secretary general Kofi Annan said the UN had both successes and f...
A.
it was signed by the 50 original member countries
B.
it was approved by the founders and other member countries
C.
it was approved by the founding members
D.
it was signed by the founding members
【简答题】扣件式钢管脚手架搭设方式有( )和( )两种。
【简答题】普通平键联接的类型有几种，轴端联接一般采用哪一种类型的平键？键的尺寸是如何选出的。试举一例。