<span>C. Isotonic.
</span><span>Isotonic contraction produces tension and causes the muscle to shorten. It is the usual means of producing body movement. </span>
<span>Isometric contraction produces tension but the muscle does not shorten.It is used to strengthen joints.</span>
Older randomized trials found that screening mammograms reduced breast cancer mortality, but they were conducted during the pre-tamoxifen era when treatment of breast cancer was less effective.
In 1980, Canadian investigators began a randomized trial of mammography and physical examination in almost 90,000 women aged 40-59 years, and they now report findings based on up to 25 years of follow-up.[1] Each woman underwent an initial clinical breast exam and then was randomly assigned either to 5 annual mammograms or to no mammography.
The mean size of cancers diagnosed in the women undergoing mammography was 1.9 cm, significantly smaller than the mean of 2.1 cm in the no-mammogram group. However, the proportion of tumors that were node positive was similar in the 2 groups.
Elaine has just been hired to work in the maintenance department of a hospital, providing maintenance support services. Hope it helps ;)
Answer:
Explanation:
The history of tests, as cited by Saiyadain, can be traced back to the efforts of Francies Galton who developed a variety of tests of sensory determination to measure person’s intellect as far back as 1883. Since then, there is no looking back with regard to the use of selection tests. As a result, a large number of general aptitude tests and specific skill tests for the purpose of selecting employees are available today.
All the tests so far developed for the selection of employees can broadly be divided into two categories:
(i) Ability Tests and
(ii) Personality Tests.