<span>One system of lens - ocular microscope
Two systems of lens - compound microscope
Some of the parts of a compound microscope are the </span>eyepiece lens.<span> There are two knobs on under the other to one side of the microscope which are used for </span>Coarse focus and Fine focus. There is an illuminator<span> at the bottom of the microscopic stand, which sheds a powerful light on the subject under the lens. Other parts include </span>objective lenses<span>, </span>stage with stage clips<span> (where the subject is placed) and r</span>evolving nosepiece. The tube<span> connects the eyepiece lens to the </span>turret<span>.</span>
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Answer:
DNS or Domain Name System
Explanation:
You can query a DNS server with a domain name to get an IP address.
Answer:
public: virtual void print()=0;
Explanation:
An abstract class contains a pure virtual function. Pure virtual class cannot be instantiated but it can be subclassed and the subclass can provide an implementation of the function.
A virtual function declaration in the class is preceded by the virtual keyword. For example, virtual void print();
A pure virtual function declaration is followed by '=0;'
public: virtual void print()=0;
The Answer Is An Output Device
