persistence
pulse repetition rate
pulse length
rotation rate
第1题：
On a hydrocarbon flammability chart the line which extends from 0% to 21.8% oxygen，lying tangent to the flammability range，is called the ______．
A.minimum oxygen content line
B.critical displacement line
C.critical dilution line
D.upper threshold limit
第2题：
______of a radar is governed by the horizontal beam width of the scanner which depends to a great extent on its physical size．
A.Range discrimination
B.Bearing discrimination
C.Echo discrimination
D.Target discrimination
第3题：
(ii) Calculate the minimum target contribution to sales ratio (%) at which ‘Nellie the Elephant’ will be
financially viable, assuming that all other data remain unchanged. (4 marks)
第4题：
Which three of these statements about the IP service level agreement （SLA） sender are true？ （）
第5题：
1. public class Target { 2. private int i = 0； 3. public int addOne（） { 4. return ++i； 5. } 6. } And： 1. public class Client { 2. public static void main（String[] args） { 3. System.out.println（new Target（）.addOne（））； 4. } 5. } Which change can you make to Target without affecting Client？（）
第6题：
Which one of the followings does not limit the effective range of radar ________．
A.Pulse width
B.Pulse repetition frequency
C.Peak power
D.Target brightness
第7题：
第8题：
A. MEMORY_TARGET can be increased up to the value of MEMORY_MAX_TARGET, if MEMORY_MAX_TARGET is set to a value greater than zero
B. MEMORY_MAX_TARGET defaults to a value of zero if MEMORY_TARGET is not set
C. MEMORY_TARGET represents the total amount of memory that can be allocated to SGA and PGA memory structures.
D. MEMORY_TARGET is static and cannot be modified without shutting down the instance
第9题：
罗斯蒙特275型手操器使用HART修改流量变送器与DCS量程不符的正确方法是：将手操器的接线接在相应端子上后送电，按online键，确认后按照（）的顺序键入。
第10题：
Which statements about the Route Target Rewrite feature are not true？ （）