A special plastics coating can be used to enable sunglasses to resist ______.

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发布时间：2021-02-21

更多“A special plastics coating can be used to enable sunglasses to resist ______.”相关的问题

第1题

In manufacturing industries some types of plastics have become__________________（取代

In manufacturing industries some types of plastics have become__________________(取代了金属).

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第2题

Plastics would harm the environment if you were to burn them. （)

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第3题

Some hard plastics can be ______ metals in manufacturing machine parts.A．substituted forB．

Some hard plastics can be ______ metals in manufacturing machine parts.

A．substituted for

B．taken the place of

C．replaced in

D．given way to

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第4题

In the passage, it is implied but NOT stated that_____.A.disposing the plastics is one of

In the passage, it is implied but NOT stated that_____.

A.disposing the plastics is one of NEC Corp’s businesses

B.magnesium is an ideal material for the case of TV

C.21-inch TV with magnesium case isn’t very popular so far

D.magnesium must be better than the plastics

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第5题

Japan is getting tough about recycling—and not in the paper and plastic kind of way. Recen

tly, the country requires that all electronic goods—TVs, VCRs, stereos, and more—be recycled But recycling will not beleft to consumers, instead, the devices will be sent to the original manufacturer for proper disposal.

The new law poses a few challenges to manufacturers who are now rushing to set up collection networks and perfecting techniques to disassemble and recycle older products.With an eye toward the future, they are also integrating easily recycled materials into new products. Plastics, a major component of most electronicproducts,pose a particular obstacle because their quality becomes worse and worse with age,losing strengthand flexibility even if reprocessed.NEC Corp. overcomes this problem by creating a plastics sandwich, in which the filling is 100 percent recycled plastic and the outer layers a mixture of 14 percent recycled material.The resulting plastic has sufficient strength and toughness for use as a case for desktop PCs. The company, in cooperation with plastic maker Sumitomo Dow, has also developed a new plastic, which engineers claim retains its mechanical properties through repeated recycling. NEC uses the plastic, which is also flame-retardant (阻燃的) in battery cases for notebook PCs.

Meanwhile, Matsushita Electric, maker of the Panasonic brand, is avoiding plastic in favor of magnesium (镁). Magnesium, says the company, is ideal for re cycling because it retains its original strength throughrepeated reprocessing. Matsushita has developed molding techniques to form. magnesium into the case for a 21-inch TV. Unfortunately, the magnesium case and energy-saving features make the TV about twice as expensive as an ordinary model.The company hopes, however, that increased use of magnesium will eventually bring prices down.

Choose correct answers to the question:

According to the present regulations of Japan, the recycling of paper and plastic will be the responsibility of______.

A.the government

B.the manufacturers

C.the consumers

D.the sellers

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第6题

I think the 15th anniversary（）a special celebration.

A.reserves

B.deserves

C.serves