For the long run variance-covariance estimator=()(j), when n is large enough, we can let= [], where [x] is the largest integer that is not greater than X.
For the long run variance-covariance estimator=()(j), when n is large enough, we can let= [], where [x] is the largest integer that is not greater than X.
A、It takes in and absorbs oxygen through the respiratory system.
B、The digestive system converts digestible food to energy and disposes of the rest.
C、The skeletal-muscular system gives form to the body.
D、It is amazing how well each system functions and coordinates with other systems to enable humans to live and reproduce.
A、Bones are united by joints and held together by ligaments.
B、They run up and down the back and protect the spinal cord, where many of the major nerves are located.
C、The body is supported and given shape by bones.
D、The red marrow produces the yellow blood cells used throughout the body to transport oxygen, while the red marrow consists of fat cells.
A、The blood is pumped into the right ventricle and to the pulmonary artery to be sent to the lungs where carbon dioxide is removed and oxygen is added.
B、During the systole, oxygenated is pumped out of the right ventricle into the aorta and from there through the veins to all organs of the body.
C、There are four chambers which are made up of several layers of smooth muscles.
D、The heart is roughly the size of the your fist.
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