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【单选题】
When your friends are _________, you should try your best to help them.A.
in return
B.
in problem
C.
in trouble
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举一反三
【简答题】双作用叶片泵输出压力p=6.3MPa,转速n=1420r/min时输出流量为51L/min,实际输入功率 =7kW。当泵空载运行时输出流量为 =58L/min,转速 =1450r/min,试求:
【简答题】二、词语解释(每题 2 分,共 10 分) 将方框里的词与解释相匹配,并译成汉语。 stress arise concierge sightseeing bellman salesman ______________, _____________ to happen; to occur
【简答题】二、词语解释(每题 2 分,共 10 分) 将方框里的词与解释相匹配,并译成汉语。 positive possess encounter essential impression basics 1. ______________, _____________ to have or own
【单选题】A network of organizations and business processes for procuring raw materials, transforming these materials into intermediate and finished products, and distributing the finished products to customers...
A.
distribution channel.
B.
supply chain.
C.
value chain.
D.
marketing channel.
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