更多"If phone calls and web pages can be"的相关试题:
[单项选择]If phone calls and web pages can be beamed through the air to portable devices, then why not electrical power, too It is a question many consumers and device manufacturers have been asking themselves for some time. But to seasoned observers of the electronics industry, the promise of wireless recharging sounds depressingly familiar. In 2004 Splashpower, a British technology firm, was citing “very strong” interest from consumer-electronics firms for its wireless charging pad. Based on the principle of electromagnetic induction (EMI) that Faraday had discovered in the 19th century, the company’s “Splashpad” contained a coil that generated a magnetic field when a current flowed through it. When a mobile device containing a corresponding coil was brought near the pad, the process was reversed as the magnetic field generated a current in the second coil, charging the device’ s battery without the use of wires. Unfortunately, although Faraday’s principles of electromagnetic induction have st
A. To turn the Faraday’s theory into profitable practice.
B. To find ways for the consumer-electronics industry.
C. To integrate consumer-electronics firms and chipmakers.
D. To promote a common standard for inductive wireless charging.
[单项选择]
From whom does the man often receive phone calls
A. His parents.
B. His classmates.
C. His friends.
[单项选择]
M: I hope there weren’t too many phone calls while I was away yesterday.
W: There wasn’t a single one until after four in the afternoon when I finally got the company to repair our line.
Why were there no phone calls before 4 （ ）
A. The secretary was ont.
B. The line was out of order.
C. People didn’t phone until 4.
[单项选择]Today, the world wide web can be used both to search information and to make it (31) to others. Information (32) on webpages is viewed by (33) of browser. The sources of information linked in this way can be located on any computer (34) is also part of the web. Each information source may be linked to an (35) number of other webpages. Hypertext and hyper- links allow users (36) as receivers of in- formation to (37) from one source of in- formation to another, deciding for themselves which information they wish to (38) .to their browser and which links they want to (39) The addresses of (40) can be found by using the hundreds of search engines Which provide (41) to databases which hold information on them. Once a webpage has been found, hyperlinks may point (42) other places of interest on the web. Addresses of webpages also appear in other more (43) media, such as m
A. modes
B. forums
C. shapes
D. forms
