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【简答题】
A letter of application Dear sir or madam, I saw your __1 __ in today's newspaper and I am writing to __2 ___ the ___ 3___ of student nurse. As you can see from my CV, I have achieved good marks in nursing. I also have IT skills and a good __ 4 ___ of English. I spent my last summer __5 ___ working in a local hospital, __6 ____ I enjoyed very much. I would appreciate the chance to come for an __7 ___ and am _8____ at any time. I __9 __ __ 10 ___ to your reply. Yous faithfully, Peter Parker
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举一反三
【单选题】The librarian told me that I could _____ these magazines for three days.
A.
borrow
B.
keep
C.
return
【简答题】设某企业的利润函数为 ,求使利润最大的产量q.
【简答题】进程的基本特征有 、 、独立性、异步性及结构特征。
【单选题】Jack told the librarian that he ______ the book as soon as he finished reading it.
A.
returned
B.
would return
C.
has returned
D.
will return
【单选题】阅读下面的问题,如果假设生产甲型、乙型微波炉的台数分别为x,y,那么此题的目标函数为( ): 某微波炉生产企业计划在下季度生产甲、乙两种型号的微波炉.已知每台甲型、乙型微波炉的销售利润分别为3和2个单位.而生产一台甲型、乙型微波炉所耗原料分别为2和3个单位,所需工时分别为4和2个单位.若允许使用原料为100个单位,工时为120个单位,且甲型、乙型微波炉产量分别不低于6台和12台.试建立一个数学...
A.
3x+2y
B.
2x+3y
C.
4x+2y
D.
100x+120y
【单选题】The librarian ________ told Mary where to find the books she wanted.
A.
hopelessly
B.
helpfully
C.
helpful
【单选题】The librarian told me that I could ______ these magazines for three days.
A.
borrow
B.
buy
C.
keep
D.
return
【简答题】某企业使用同样的变动投入要素和固定设备生产变动比例的联产品：优品和极品。它们的生产函数分别为 Q优＝4．0H优 和Q极＝2H极 H优和H极分别是生产优品和极品的变动要素投入的小时数，投入要素的总小时数为 H＝H优＋H极 变动投入要素的供给函数为 P＝5．0＋0．25H 另还有20000的固定投入。 这两种产品面对的需求函数分别为 Q优＝1500－25P优 Q极＝600－4P极 试求利润最大化时用了...
【简答题】进程的基本特征有 、 、独立性、异步性和结构特征。
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