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问题 单项选择题

油浸式变压器（电抗器）精益化评价细则要求：采用排油注氮保护装置的变压器，本体储油柜与气体继电器间应设（）。

A.逆止阀

B.开口阀

C.球型阀

D.顺流阀

答案

参考答案：A

单项选择题

沉没成本是指已经付出且不可收回的成本。沉没成本是由过去的决策或环境决定的，它所造成的成本是不能由现在或将来的任何决策而改变的。
根据上述定义，下列不涉及沉没成本的是( )。

A．小李花100美元买了一台二手台式电脑，回国前南于无法携带，只好忍痛将电脑丢弃
B．某煤矿的煤炭已经开采完，矿井里的一些采掘设备由于无法取出，只好被废弃
C．小陈如果在承包的山林中放养野鸡，比放养野兔的年收益更多，但管理更多，于是他选择了放养野兔
D．小张准备约小丽一起去看电影，因为小丽临时加班，又不能退票，小张只好将两张电影票充当了留言条
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单项选择题

Egyptian wine has an extensive history within the history of Egyptian civilization. Grapes were not (1) to the landscape of Egypt, rather the vines themselves are (2) to have been imported from the Phoenicians, (3) the actual origins remain in (4) . What is known, is that (5) the third millennium BC, Egyptian kings of the first (6) had extensive wine cellars, and wine was used extensively in the temple ceremonies. The main (7) of wine in Egypt, took place between the king, nobles, and the priests in temple ceremonies, and is (8) by numerous painted relief’s, and other (9) evidence. The vineyards of ancient Egypt, were quite different from the modern methods of wine making today. (10) viticulture ( or wine making), ceased to (11) an exclusively ceremonial purpose, the Egyptians began to experiment with simple structures for their vines to train on, (12) found a way to train their vines so they were easy low (13) bushes, and found ways for the soil to (14) more moisture for the vines. Egyptian wine making experiments included the use of different wine presses, adding heat to the must ( the grape juice ready for fermentation) (15) make the wine sweet, and differences in vat types and materials. The (16) finished product of wine, was poured through a cloth filter, and then into earthenware jars, (17) they would be sealed with natural tar and left to (18) . The Egyptians kept accurate records of their vintages, and (19) of their wines, each jar of wine was clearly (20) with it’s own vintage, and quality.

11（）

A.act

B.serve

C.work

D.reach
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