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• 1065人已做

600

【逻辑CR】-8770-OG16

Snowmaking machines work by spraying a mist that freezes immediately on contact with cold air. Because the sudden freezing kills bacteria, QuickFreeze is planning to market a wastewater purification system that works on the same principle. The process works only when temperatures are cold,...

• 1034人已做

700

【逻辑CR】-8772-OG16

Homeowners aged 40 to 50 are more likely to purchase ice cream and are more likely to purchase it in larger amounts than are members of any other demographic group. The popular belief that teenagers eat more ice cream than adults must, therefore, be false. The argument is flawed primari...

• 814人已做

650

【逻辑CR】-8773-OG16

Suncorp, a new corporation with limited funds, has been clearing large sections of the tropical Amazon forest for cattle ranching. This practice continues even though greater profits can be made from rubber tapping, which does not destroy the forest, than from cattle ranching, which does d...

• 822人已做

680

【逻辑CR】-8776-OG16

According to a prediction of the not-so-distant future published in 1940, electricity would revolutionize agriculture. Electrodes would be inserted into the soil, and the current between them would kill bugs and weeds and make crop plants stronger. Which of the following, if true, most ...

• 810人已做

600

【逻辑CR】-8777-OG16

A company is considering changing its policy concerning daily working hours. Currently, this company requires all employees to arrive at work at 8 a.m. The proposed policy would permit each employee to decide when to arrive—from as early as 6 a.m. to as late as 11 a.m.The adoption of thi...

• 758人已做

650

【逻辑CR】-8778-OG16

Parland's alligator population has been declining in recent years, primarily because of hunting. Alligators prey heavily on a species of freshwater fish that is highly valued as food by Parlanders, who had hoped that the decline in the alligator population would lead to an increase in the ...

• 764人已做

650

【逻辑CR】-8780-OG16

The amount of time it takes for most of a worker's occupational knowledge and skills to become obsolete has been declining because of the introduction of advanced manufacturing technology (AMT). Given the rate at which AMTis currently being introduced in manufacturing, the average worker's...

• 820人已做

600

【逻辑CR】-8781-OG16

In virtually any industry, technological improvements increase labor productivity, which is the output of goods and services per person-hour worked. In Parland's industries, labor productivity is significantly higher than it is in Vergia's industries. Clearly, therefore, Parland's industri...

• 725人已做

600

【逻辑CR】-8782-OG16

While many people think of genetic manipulation of food crops as being aimed at developing larger and larger plant varieties, some plant breeders have in fact concentrated on discovering or producing dwarf varieties, which are roughly half as tall as normal varieties.Which of the following...

• 771人已做

600

【逻辑CR】-8784-OG16

Traverton's city council wants to minimize the city's average yearly expenditures on its traffic signal lights and so is considering replacing the incandescent bulbs currently in use with arrays of light-emitting diodes (LEDs) as the incandescent bulbs burn out. Compared to incandescent bu...

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• 【问题求解PS】-14339

A certain basket contains 10 apples, 7 of which are red and 3 of which are green.  If 3 different&nb...

70人做过-1条评论-74.3%正确率

• 【句子改错SC】-10150

Restorers say that if allowed to remove and replace the discolored layer of varnish on the Mona Lisa, thecolors Leonardo da Vinci painted nearly five hundred years ago will once again shine through.

403人做过-2条评论-60.3%正确率

• 【问题求解PS】-12942

In the figure shown, the length of line segment QS is $$4\sqrt{3}$$. What is the perimeter of equilateral triangle PQR?

34人做过-2条评论-70.6%正确率

• 【数据充分DS】-13745

A scientist recorded the number of eggs in each of 10 birds’ nests.  What was the standard deviation of...

24人做过-1条评论-75%正确率

• 【数据充分DS】-11793

If n and t are positive integers, what is the greatest prime factor of the product nt ? (1) The&nbs...

132人做过-4条评论-54.5%正确率

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