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Dear Sirs, Our corporation is established for the purpose of carrying on import and export business as well as other activities in connection with foreign trade. We are active in commercial intercourse with the trade and financial circles of various countries and districts. We are striving to expand economic cooperation and exchange technology with foreign countries. A booklet including a general introduction, the scope of business and other topics is enclosed for your reference. We welcome your inquiries.
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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【单选题】经纬仪的主要轴线应满足的几何条件有（） ①水准管轴垂直于竖轴 ②十字丝竖丝垂直于横轴 ③视准轴垂直于横轴 ④横轴垂直于竖轴 ⑤水准管轴平行于视准轴 ⑥圆水准轴平行于竖轴
A.
①②③④
B.
①②⑤⑥
C.
①③④⑥
D.
②③⑤⑥
【单选题】“方言孤岛”现象是一个复杂的存在,这是被大多数语言学家和社会学家所认可的。但是个现象是否具有独立的研究价值,则使研究者将信将疑,许多从事文化史和语言史研究的,对这个问题也感到疑惑。上面这段话主要是想告诉人们( )
A.
大多数研究者并不承认“方言孤岛”具有独立的研究价值。
B.
语言学家与文化史研究者在“方言孤岛”研究上观点不同。
C.
研究者对“方言孤岛”是否具有独立的研究价值态度谨慎。
D.
研究者对于“方言孤岛”作为一个复杂的存在不存在分歧。
【单选题】It will cost time to paint the old furniture.
A.
considerate
B.
considerably
C.
considerable
【单选题】Opportunity cost is______.
A.
a cost that cannot be avoided, regardless of what is done in the future
B.
the cost of doing something as measured in terms of the value of the lost opportunity to pursue the best alternative activity with the same time and resources
C.
the additional cost of producing an additional unit of output
D.
the additional cost of buying an additional unit of a product
【单选题】经纬仪的主要轴线应满足的几何条件有( )。 1水准管轴垂直于竖轴 2十字丝竖丝垂直于横轴 3视准轴垂直于横轴 4横轴垂直于竖轴 5水准管轴平行于视准轴6圆水准轴平行于竖轴
A.
①②③④
B.
①②⑤⑥
C.
①③④⑥
D.
②③⑤⑥
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