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【单选题】
飞机液压系统蓄压器的功用包括 1在系统对流量和压力需求量大时,辅助泵向系统供压。 2在正常工作期间减弱系统压力波动。 3储存能量,必要时向飞机的重要部件 ( 如刹车 ) 供压。 4蓄积压力,用补充液压油箱中油液因蒸发、泄漏的损耗。A.
①②③④
B.
②③
C.
③④
D.
①②③
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举一反三
【单选题】0621 0051 :下列一维数组正确初始化是 ( ) 。
A.
int a[5] ={1,2};
B.
int a[2]={12,3,4,5};
C.
int a[5]={,,1,2};
D.
int *a={12,3,4,5};
【简答题】Maggiano is an award-winning teacher in the Social Studies Department at West Springfield High School in Virginia．He has taught in public and private schools for 25 years．In a piece on his blog called...
【简答题】c___ n. a large, destructive fire
【简答题】Maggiano is an award-w inning teacher in the Social Studies Department at West Springfield High School in Virginia. He has taught in public and private schools for 25 years .In a piece on his blog cal...
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