更多"Three straight lines meeting at thr"的相关试题:
[单项选择]Three straight lines meeting at three points (constitute) a triangle.
A. center on
B. come down to
C. consist of
D. form
[简答题] WATER
The second most important constituent of the biosphere is liquid water. This can only exist in a very narrow range of temperatures, since water freezes at 0℃ and boils at 100℃. This is only a tiny range compared with the low temperatures of some other planets and the hot interior of
the earth, let the temperature of the sun. (1)__________
As we know, life would only be possible on the face (2)__________
of a planet had temperatures somewhere within this range. (3)__________
The earth’’s supply of water probably remains quite fairly (4)__________
constant in quantity. A certain number of hydrogen atoms,
which are one of the main constituents of water,
are lost by escaping from the atmosphere to
out space, but they are probably just about replaced by (5)__________
new water rising away from the depths of the earth during (6)__________
volcanic action. The total quantity of water is not known,
and it is about enough to cover
[单项选择]
Accelerated analysis approaches emphasize the construction of (71) to more rapidly identify business and user requirements for a new system. As an accelerated analysis technology, (72) reads the program code and automatically generates the equivalent system model, and the code can be obtained from (73) All system analysis approaches require some form of (74) which includes those techniques to be used to identify or extract system problems and solution requirements from user community. (75) is a classical set of techniques used to collect information about system problems, opportunities, solution requirements, and priorities.
(73)是()
A. existing database and application program
B. application program and user interface
C. existing database and user interface
D. existing database, application program and user interface