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多选题
Which statements concerning the value of a member variable are true， when no explicit assignments have been made？（）
A
The value of an int is undetermined.
B
The value of all numeric types is zero.
C
The compiler may issue an error if the variable is used before it is initialized.
D
The value of a String variable is （empty string）.
E
The value of all object variables is null.
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更多 “多选题Which statements concerning the value of a member variable are true， when no explicit assignments have been made？（）AThe value of an int is undetermined.BThe value of all numeric types is zero.CThe compiler may issue an error if the variable is used before it is initialized.DThe value of a String variable is （empty string）.EThe value of all object variables is null.” 相关考题
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A class design requires that a member variable should be accessible only by same package, which modifer word should be used?
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Which modifer should be applied to a declaration of a class member variable for the value of variable to remain constant after the creation of the object?()
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Given:Which two statements are true about the result if the default locale is Locale.US?()
A.The value of b is 2.B.The value of a is 3.14.C.The value of b is 2.00.D.The value of a is 3.141.E.The value of a is 3.1415.F.The value of a is 3.1416.G.The value of b is 2.0000.
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Which of the following statements describe the use of the keywordstatic?a) Within the body of a function: A static variable maintains its valuebetween function revocationsb) Within a module: A static variable is accessible by all functionswithin that modulec) Within a module: A static function can only be called by otherfunctions within that module
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Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure?A.Tearing through the member is more likely in this type connectionB.The weld may be broken by the stresses caused by rivetingC.The weld increases the tensile stress on the rivet headsD.The welding must be completed before the riveting commences
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Which statements concerning the switch construct are true？（） A、All switch statements must have a default label.B、There must be exactly one label for each code segment in a switch statement.C、The keyword continue can never occur within the body of a switch statement.D、No case label may follow a default label within a single switch statement.E、A character literal can be used as a value for a case label.
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Which statements concerning the correlation between the inner and outer instances of non-static inner classes are true？（） A、Member variables of the outer instance are always accessible to inner instances， regardless of their accessibility modifiers.B、Member variables of the outer instance can never be referred to using only the variable name within the inner instance.C、More than one inner instance can be associated with the same outer instance.D、All variables from the outer instance that should be accessible in the inner instance must be declared final.E、A class that is declared final cannot have any inner classes.
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A public member vairable called MAX_LENGTH which is int type， the value of the variable remains constant value 100. Use a short statement to define the variable.（） A、 public int MAX_LENGTH=100；B、 final int MAX_LENGTH=100；C、 final public int MAX_LENGTH=100；D、 public final int MAX_LENGTH=100；
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Which statements concerning the value of a member variable are true， when no explicit assignments have been made？（） A、The value of an int is undetermined.B、The value of all numeric types is zero.C、The compiler may issue an error if the variable is used before it is initialized.D、The value of a String variable is "" （empty string）.E、The value of all object variables is null.
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Concerning the E.U.，which of the following statements is wrong？（）A、A college student in Greece can get a job in the U.K.in summer vocation.B、All the member countries adopt the currency，euro.C、The executive body of the E.U. is the European Commission，headquartered in Brussels.D、The Council of Ministers has the final power to decide E.U.actions.
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单选题Which of the following statements concerning energy is correct?（）A
Energy can be created or destroyedB
Energy may not be transformedC
The total quantity of energy in the universe is always the sameD
None of the above
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多选题Concerning the figure below, if a =b, which of the following statements must be true? (Indicate all such statements.)Ac=dBl and k are parallelCm and l are perpendicular
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单选题Sometimes it is desirable to connect a member both by riveting and welding. Which statement is TRUE concerning this procedure? （）A
Tearing through the member is more likely in this type connectionB
The weld may be broken by the stresses caused by rivetingC
The weld increases the tensile stress on the rivet headsD
The welding must be completed before the riveting commences
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单选题Several @functions can execute multiple statements. Which one of the following initializes a variable and can increment in during the operation?（）A
@do B
@for C
@while D
@dowhile
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单选题Which variable factor affects the initial lashing requirements aboard Ro-Ro vessels? （）A
Age of vehicle or cargo unitB
Size and weight of vehicle/cargo unitC
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Air pressure in the vehicles tires
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单选题A public member vairable called MAX_LENGTH which is int type， the value of the variable remains constant value 100. Use a short statement to define the variable.（）A
public int MAX_LENGTH=100；B
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final public int MAX_LENGTH=100；D
public final int MAX_LENGTH=100；
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单选题Which of the following statements concerning fire-tube boilers is correct?（）A
Combustion gases flow through the tubesB
Flames impinge on the tubesC
Combustion occurs in the tubesD
Water flows through the tubes
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单选题Which statements concerning the switch construct are true？（）A
All switch statements must have a default label.B
There must be exactly one label for each code segment in a switch statement.C
The keyword continue can never occur within the body of a switch statement.D
No case label may follow a default label within a single switch statement.E
A character literal can be used as a value for a case label.
考题
单选题Which of the following statements is correct concerning the “flash point ” of a liquid?（）A
It is lower than the ignition temperatureB
It is the temperature at which a substance will spontaneously igniteC
It is the temperature at which a substance, when ignited, will continue to bumD
It is the temperature at which the released vapors will fall within the explosive range
考题
单选题Which of the following statements is true regarding the initialization parameter DIAGNOSTIC_DEST？（） The default value is the value of the environment variable $ORACLE_HOME； if $ORACLE_HOME isn’t setA
then the default is set to $ORACLE_BASE The default value is the value of the environment variable $ORACLE_BASE； if $ORACLE_BASE isn’t set，B
then it is set to $ORACLE_HOMEC
DIAGNOSTIC_DEST is always equal to $ORACLE_HOMED
DIAGNOSTIC_DEST is always equal to $ORACLE_BASE
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多选题Which statements are true concerning the effect of the and operators?（）AFor non-negative values of the left operand， the and operators will have the same effect.BThe result of （-1 1） is 0.CThe result of （-1 1） is -1.DThe value returned by will never be negative as long as the value of the right operand is equal to or greater than 1.EWhen using the operator， the leftmost bit of the bit representation of the resulting value will always be the same bit value as the leftmost bit of the bit representation of the left operand.
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单选题A class design requires that a member variable cannot be accessible directly outside the class. Which modifier should be used to obtain the access control？（）A
publicB
no modifierC
protectedD
private
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单选题The value of the controlled variable, which under any fixed set of conditions the automatic controller operates to maintain, is known as （）A
set pointB
control pointC
deviationD
offset
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单选题Which of the following statements is correct concerning the viscosity of lubricating oil?（）A
Viscosity will increase as temperature increasesB
Viscosity is a measure of a fluid s internal resistance to flowC
Viscosity will decrease as temperature decreasesD
Viscosity is not dependent on temperature
考题
单选题Concerning the E.U.，which of the following statements is wrong？（）A
A college student in Greece can get a job in the U.K.in summer vocation.B
All the member countries adopt the currency，euro.C
The executive body of the E.U. is the European Commission，headquartered in Brussels.D
The Council of Ministers has the final power to decide E.U.actions.
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