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【单选题】
企业根据对市场需求的预测,有计划的组织生产,用事先生产的库存产品满足市场需求的生产方式是( )。
A.
备货型生产
B.
订单型生产
C.
流水生产
D.
成批生产
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【简答题】Some children are natural-born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, “operates under the theory...
【简答题】C Some children are natural-born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, “operates under the theo...
【判断题】发动机工作温度越低,润滑油粘度越大,流动性越好。
A.
正确
B.
错误
【单选题】听力原文: Some children are natural born bosses. They have a strong need to make decisions, manage their environment, and lead rather than follow. Stephen Jackson, a Year One student, 'operates under the ...
A.
They may probably become lonely.
B.
They may probably become skilful.
C.
They may probably become relaxed.
D.
They may probably become hesitant.
【单选题】要求设计输出转矩T=52.5N・m,转速n=30r/min的轴向柱塞式液垣马达,设马达的排量q 0 =105cm 3 /r,求所需要的流量和压力各为多少(马达的机械效率及容积效率各为0.9)?
A.
(1)流量:3.5L/min; (2)压力:3.49 x 10 6 Pa=3.49Mpa
B.
(1)流量:3.5L/min; (2)压力:3.49 x 10 6 Pa=3.49Mpa A .(1)流量:3.5L/min; (2)压力:3.49 x 10 8 Pa=3.49Mpa B .(1)流量:3.7L/min; (2)压力:3.49 x 10 6 Pa=3.49Mpa
【简答题】2课堂练习.图所示系统中,液压泵的排量 q 1 =115mL/r ,转速 n 1 =1000r/min ,容积效率 η v1 =0.93 ;液压马达的排量 q 2 =148 mL/r ,机械效率 η m2 =0.9 ,总效率 η 2 =0.84 ,输入压力 p 21 =8.3Mpa ,不计管道损失。 (1) 液压泵的实际输出流量为 ________L/min (保留两位小数)。 (2) 液压马达转...
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【多选题】国际储备的作用是()。
A.
显示一事实力
B.
平衡国际收支
C.
稳定本国货币汇率
D.
对外举债的保证
E.
一国政治安定的象征
【简答题】In this chapter we focus on how to arrange your gathered material in the form of an argument.
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