The term "disruptive technology" is popular, but is widely misused. It refers not simply to a clever new technology, but to one that undermines an existing technology-and which therefore makes life very difficult for the many businesses which depend on the existing way of doing things. Twenty years ago, the personal computer was a classic example. It swept aside an older mainframe-based style of computing, and eventually brought IBM, one of the world’s mightiest firms at the time, to its knees. This week has been a coming-out party of sorts for another disruptive technology, "voice over internet protocol" (VOIP), which promises to be even more disruptive, and of even greater benefit to consumers, than personal computers.
VOIP’s leading proponent is Skype, a small firm whose software allows people to make free calls to other Skype users over the internet, and very cheap calls to traditional telephones-all of which spells trouble for incumben
A. Almost-free internet phone calls herald the slow death of traditional telephony.
B. Another data service was delivered entirely over the internet.
C. The traditional telephone business have yet to turn a profit.
D. The dramatic shift in the telecoms industry has received little attention.
The term "disruptive technology" is popular, but is widely misused. It refers not simply to a clever new technology, but to one that undermines an existing technology-and which therefore makes life very difficult for the many businesses which depend on the existing way of doing things. Twenty years ago, the personal computer was a classic example. It swept aside an older mainframe-based style of computing, and eventually brought IBM, one of the world’s mightiest firms at the time, to its knees. This week has been a coming-out party of sorts for another disruptive technology, "voice over internet protocol" (VOIP), which promises to be even more disruptive, and of even greater benefit to consumers, than personal computers.
VOIP’s leading proponent is Skype, a small firm whose software allows people to make free calls to other Skype users over the internet, and very cheap calls to traditional telephones-all of which spells trouble for incumben
A. states the popularity of the term
B. indicates a clever new technology
C. undermines an existing technology
D. corrects a misconception
In mathematics the term "solid" describes a geometric figure with three dimensions（）
The term "nationalism" is generally used to describe two phenomena: (1)the members of a nation care about their national identity and(2) that the members of a nation seek to achieve (or sustain) self-determination.
It is traditional, therefore, to distinguish nations from states—whereas a nation often consists of an ethnic or cultural community, a state is a political entity with a high degree of sovereignty. While many states are nations in some sense, there are many nations which are not fully sovereign states. As an example, the Native American Iroquois constitute a nation but not a state, since they do not possess the requisite political authority over their internal or external affairs. If the members of the Iroquois nation were to strive to form a sovereign state in the effort to preserve their identity as a people, they would be exhibiting a state—focused nationalism.
Nationalism has long been ignored as a topic in political philosophy
A. the peace and the violence
B. the internal and the external
C. the attitude and the actions
D. the powerless and the sovereignty
The term "tides" has come to represent the cyclical rising and failing of ocean waters, most notably evident along the shoreline as the border between land and sea moves in and out with the passing of the day. The primary reason for this constant redefinition of the boundaries of the sea is the gravitational force of the moon.
This force of lunar gravity is not as strong as Earth’s own gravitational pull, which keeps our bodies and our homes from being pulled off the ground, through the sky, and into space toward the moon. It is a strong enough force, however, to exert a certain gravitational pull as the moon passes over Earth’s surface. This pull causes the water level to rise(as the water is literally pulled, ever so slightly, toward the moon) in those parts of the ocean that are exposed to the moon and its gravitational forces. When the water level in one part of the ocean rises, it must naturally fall in another, and this is what causes water lev
A. weak
B. strong
C. destructive
D. related to the moon
The term "remote sensing "refers to the techniques of measurement and interpretation of phenomena from a distance. Prior to the mid-1960’s the interpretation of. film image was the primary means for remote sensing of the Earth’s geologic features. With the development of the opt mechanical scanner, scientists began to construct digital multi-spectral images using data beyond the sensitivity range of visible light photography. (46)These lineages are constructed by mechanically aligning pictorial representations of such phenomena as the reflection of light waves outside the visible spectrum, the refraction of radio waves, and the daily changes in temperature in areas on the Earth’s surface. Digital multi-spectral imaging has now be dome, the basic tool in geologic remote sensing from satellites. (47)The advantage of digital over photographic imaging is evident: the resulting numerical data are precisely known and digital data are not subject to
我来回答:
