A、exhibits a change in magnitude
B、has a changing declination
C、is increasing in SHA
D、is also known as a red giant
更多“A variable star is one that（）.”相关的问题
A、has a declination equal to twice that of the Sun B、comprises two stars that appear close together C、is twice as bright as a single star D、suddenly becomes much brighter and then fades
A、2.5 times as bright as a second magnitude star B、3 times as bright as a second magnitude star C、5 times as bright as a second magnitude star D、10 times as bright as a second magnitude star
A、Compilation fails. B、An exception is thrown at runtime. C、The variable first is set to null. D、The variable first is set to elements[0].
A、 Local variables defined inside a method are destroyed when the method is exited. B、 Local variables are also called automatic variables. C、 Variables defined outside a method are created when the object is constructed. D、 A method parameter variable continues to exist for as long as the object is needed in which the method is defined.
A、A.#!/bin/ksh line is missing B、B.Variable name VAR is not properly initialized C、C.Loop variable is not incremented inside the loop D、D.Loop variable is not decremented inside the loop
A、Compilation fails. B、An exception is thrown at runtime. C、The variable first is set to null. D、The variable first is set to elements[0].
A、which governs the state of a variable B、which provides a visual and audible alarm C、which indicates values of controlled variables D、which measures the state of the controlled variable
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