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【简答题】
当液压系统的工作压力高,环境温度高或运动件速度较慢时,为了减少泄漏,宜选用粘度较____的液压油;当工作压力低,环境温度低或运动件的速度较快时,为了减小功率损失,宜采用粘度较____的液压油。
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【简答题】【 2018· 北京卷, A 】 My First Marathon (马拉松) A month before my first marathon, one of my ankles was injured and this meant not running for two weeks, leaving me only two weeks to train. Yet, I was determi...
【简答题】假设某计算机系统的内存大小为256K，在某一时刻内存的使用情况如下表所示。 那么系统采用的是什么分配算法？ A.A.最佳适配 B.B.最差适配 C.C.首次适配 D.D.下次适配
【简答题】Edward Sims was born in 1892. He was the fifth child and only son of Herbert and Dora Sims. Herbert was a blacksmith(铁匠), and had a thriving trade horseshoes. He was determined that his first-b...
【简答题】假设某计算机系统的内存大小为256K，在某一时刻内存的使用情况如下表所示。 那么系统采用的是什么分配算法？ A.A.最佳适配 B.B.最差适配 C.C.首次适配 D.D.下次适配
【简答题】Passage 2 (2018· 北京高考 ·A 篇 ) My First Marathon ( 马拉松 ) A month before my first marathon, one of my ankles was injured and this meant not running for two weeks, leaving me only two weeks to train. Yet,...
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【单选题】6 7. The question ______ now is where to build the new factory.
A.
discusses
B.
discussing
C.
be discussed
D.
being discussed
【单选题】6 6. Do not ______ me to help you unless you work harder.
A.
expect
B.
hope
C.
depend
D.
think
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