Nanotechnology is a new technology in the 21st century. Nanotechnology is a unit of length. One nanometer is equal to one billionth of one meter. The formula is 1 nanometer = 10-N meters, and N is () A. 10B. 9C. 8D. -10

Nanotechnology is a new technology in the 21st century. Nanotechnology is a unit of length. One nanometer is equal to one billionth of one meter. The formula is 1 nanometer = 10-N meters, and N is () A. 10B. 9C. 8D. -10

Because one nanometer is equal to one billionth of one meter, that is, one meter is equal to one hundred million nanometers, one nanometer is equal to 10-9 meters, and N is equal to 9

Concrete usage of English phrases
is to do,
will do,
is going to do.
The specific usage of the above three words

Here is going to do and will do is a sign of the future tense. The difference between them is very small and can be ignored basically. But if we have to separate them, is going to do is something that has been planned and needs to be done. While will do is a temporary arrangement and has no definite plan

1988+1989×19871988×1989−1=______ ．

1988 + 1989 × 19871988 × 1989 − 1, = 1988 + 1989 × (1988 − 1) 1988 × 1989 − 1, = 1988 + 1989 × 1988 − 19891988 × 1989 − 1, = 1988 × 1989 − 11988 × 1989 − 1, = 1

Make out give out put

Make out make out make out make out
Can you make out what he is trying to say?
Do you understand what he meant?
To give out; publish; exhaust; exhaust
In helping others,we shall help ourselves,for whatever good we give out completes the circle and comes back to us.
When we help others, we also help ourselves, because the good we do will come back to us
Put out put out put out put out put out put out
Burn all wood and coals to ash,put out campfires completely,then scatter cool ashes.
Burn all the wood and coal to ashes, throw it completely into the campfire, and then dissipate the cool ashes

Add a natural number to the numerator and denominator of the fraction 1997 / 1999, which is equal to 1999 / 2000

2001

In general questions, add auxiliary verb (), third person singular (), non third person singular (), verb ()

Do or does
does
do
Prototype

If the function f (x) = 2x3-6x + K has only one zero point on R, the range of constant k is 3Q

It means that there is only one intersection point between this function and the x-axis, that is, there is only one solution to the equation 0 = 2x3-6x + K

English phrase: among us

among us

As shown in the figure, in △ ABC, ∠ C = 90 °, AC = BC, Da bisects ∠ cab and intersects BC at point D. can we determine a point E on AB so that the perimeter of △ BDE equals the length of AB? If yes, please point E and give proof; if not, please explain the reason

We can determine a point E on AB such that the perimeter of △ BDE is equal to the length of ab. it is proved that in △ ABC, ∠ C = 90 ° Da bisects ∠ cab, ｜ DC = De, ∠ CDA = ∠ EDA, ｜ AE = AC, ∵ AC = BC, ｜ ∠ B = 45 ° BC = AE, ｜ △ bed is isosceles right triangle, ｜ de = be

The plural of desk and is

desks.are