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举一反三
【多选题】8/6R—AH型介质泵中，“8”代表（），“6”代表（）。
A.
“8”为介质泵吸入口的直径
B.
“8”为介质泵排出口的直径
C.
“6”为介质泵排出口直径
D.
“6”为介质泵吸入口直径
【单选题】Friction between America’s military and its civilian overseers is nothing new. America’s 220-year experiment in civilian control of the military is a recipe for friction. The nation’s history has seen...
A.
Roosevelt was better prepared to be a wartime president than Lincoln
B.
in the Second World War, the relationship between the White House and the generals was intense
C.
both Lincoln and Roosevelt were good wartime presidents, although their actual way of dealing things may be different
D.
George Washington was actually the best president