标签：substitutes

2020-02-24到2020-06-30

Unit 1 Introduction to civil engineering Language focus

1、 The history of civil engineering can be traced back to ancient times when the sole means of construction was human labor, lacking any sophisticated equipment.

A:prominent
B:advanced
C:significant
D:elegant
答案: advanced

2、 Ancient civil engineering projects include the Roman public baths, the Mayan ruins at Copan, Palenque an

点我阅读全文

2020-09-22到2021-02-13

Chapter 10： Oligopoly and Game Theory Test 1

1、 Pure monopoly is characterized by

A:one firm, with no competitors, that produces a product with no close substitutes.
B:many firms that produce a homogeneous product.
C:many firms that produce slightly different products that are close substitutes.
D:such a small number of firms that each must figure out how the others will respond to its own actions.

点我阅读全文