The division is not arbitrary but necessary, because the substance of each of these Worlds is amenable to laws which are practically inoperative in others. For instance, in the Physical World, matter is subject to gravity, contraction and expansion. In the Desire World there is neither heat nor cold, and forms levitate as easily as they gravitate.
Enter these lines separately in the Shell. As in the simpler applications of range, the values are only generated one at a time, as needed.
To see the entire sequence at once, convert the sequence to a list before printing: It is needed when the step size from one element to the next is not 1. The most general syntax is range startpastEndstep The value of the second parameter is always past the final element of the list.
Each element after the first in the list is step more than the previous one. Predict and try in the Shell: The step size can be negative. Try in the Shell: Make up a range function call to generate the list of temperatures printed in the tea example, Test it in the Shell.
These ranges, like the simpler ranges that we used earlier, are most often used as the sequence in a for loop heading: Obviously they could have been rewritten with range function calls. Now lets try a more interesting example. Suppose you want to let a user enter a sequence of lines of text, and want to remember each line in a list.
This could easily be done with a simple repeat loop if you knew the number of lines to enter. For example, in readLines0. This means the number of repetitions would not be known ahead of time.
A while loop is appropriate here.
There is still the question of how to test whether the user wants to continue. An obvious but verbose way to do this is to ask before every line if the user wants to continue, as shown below and in the example file readLines1. Read it and then run it: Note The data must be initialized before the loop, in order for the first test of the while condition to work.
Also the test must work when you loop back from the end of the loop body. This means the data for the test must also be set up a second time, in the loop body. It is easy to forget the second time!
Two lines must be entered for every one you actually want! A practical alternative is to use a sentinel: You could agree to use the line DONE! If you think about it, the Python Shell uses this approach when you enter a statement with an indented body. This way you only need to enter one extra very simple line, no matter how many lines of real data you have.
What should the while condition be now? You need the opposite condition.
Hence you see the statements setting the variable line both before the loop and at the end of the loop body. It is easy to forget the second place inside the loop! After reading the rest of this paragraph, comment the last line of the loop out, and run it again:Abstract terms are useful and necessary when we want to name ideas (as we do in thesis statements and some paragraph topic sentences), but they're not likely to make points clear or interesting by themselves.
A. if concrete is unsatisfactory, it will not settle during the slump test B.
the sag test checks the amount of aggregate in the cement C. the compression test is very costly if the results are unsatisfactory. Example Method Statements, Risk Assessments, COSHH and General Health and Safety Documents with FREE Method Statements and .
Which of the following statements regarding cast-in-place concrete is MOST accurate?
|Downloading prezi...||Etymology[ edit ] The word concrete comes from the Latin word "concretus" meaning compact or condensed the perfect passive participle of "concrescere", from "con-" together and "crescere" to grow. Prehistory[ edit ] Small-scale production of concrete-like materials dates to BC, pioneered by the Nabataea traders or Bedouinswho occupied and controlled a series of oases and developed a small empire in the regions of southern Syria and northern Jordan.|
|Classifying Statements as Concrete or Abstract by Kyndl Crouse on Prezi||One area of the concrete life cycle worth noting is the fact that concrete has a very low embodied energy relative to the quantity that is used. This is primarily the result of the fact that the materials used in concrete construction, such as aggregates, pozzolansand water, are relatively plentiful and can often be drawn from local sources.|
Poor quality concrete results if proper techniques are not used at each step. The quality control test used to check moisture content of concrete is known as the ___test. When the time comes to install a new driveway, the biggest decision is whether to use concrete or asphalt.
Sure, there are other driveway material choices — gravel at the low end and brick pavers at the high end — but concrete and asphalt are the most common, and each comes with advantages and disadvantages.. Concrete lasts longer, but .
Concrete Statements Abstract Statements Where a client may present an idea or feeling that is not very specific. A client who may use an abstract statement is typically good .