MTBF（Mean Time Between Failure）：（）。
MTBF（Mean Time Between Failure）：（）。
相关考题：
系统可靠性的简单度量是平均故障间隔时间(MTBF)，其计算公式是(9)。(MTTF: Mean Time To Failure; MTTR: Mean Time To Repair)A．MTTF+MTTRB．MTTF-MTTRC．MTTR-MTTFD．MTTF×MTTR
计算机的“可用性”主要取决于MTBF(Mean Time Between Failure)和MTTR(Mean Time To Repair)，一台计算机的可用性比较高是指A．MTBF和MTTR都高B．MTBF和MTTR都低C．MTBF高，MTTR低D．MTBF低，MTTR高
系统可靠性的简单度量是平均故障间隔时间(MTBF)，其计算公式是(23)；软件可用性是指在某个给定时间点上程序能够按照需求执行的概率，其定义为(24)。(MTTF： Mean Time To Failure：MTTR：Mean Time To Repair)A．MTTF+MTTRB．MTTF-MTTRC．MTTR-MTTFD．MTTF×MTTR
If the goods could not arrive in time for the Spring Festival rush, good quality and competitive price would mean nothing at all.(英译中)
软件可用性是指在某个给定时间点上程序能够按照需求执行的概率，其定义为(4)。(MTTF: Mean Time To Failure; MTTR: Mean Time To Repair)A．B．C．D．
软件可用性是指在某个给定时间点上程序能够按照需求执行的概率，其定义为(11)。(MTTF：Mean Time To Failure；MTTR：Mean Time To Repair)A．可用性=×100%B．可用性=×100%C．可用性=×100%D．可用性=×100%
通常使用平均修复时间MTTR(Mean Time to Repair)和平均故障间隔时间MTBF(Mean Time Between Failure)这两个指标来评价产品或系统的可靠性。 A．错误B．正确
A mean sun is used as the reference for solar time for three reasons. Which reason is NOT a cause for use of a mean sun?A.The motion of the apparent sun is along the eclipticB.Measurement of time is along the celestial equatorC.The speed of the Earth's revolution is not constantD.There are variations in the Earth's rotational speed
The maximum difference between mean time and apparent time is ______.A.equal to the longitude expressed in time unitsB.about 16 minutesC.the difference between the GHA of mean sun and the first point of AriesD.15°of arc
A signal indicating Greenwich mean time would be preceded with ______.A.a code hoist to indicate Greenwich mean time to followB.the letter GC.the letters GTD.the letter Z
The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with ______．A.An atomic time standardB.Daylight Savings TimeC.Eastern Standard TimeD.Greenwich Mean Time
问答题Kara attends a university where students study for an average (arithmetic mean) of 13.4 hours per week. How many hours per week does Kara study? (1) The standard deviation of study time at Kara’s school is 2.8. (2) Kara’s study time is one standard deviation away from the mean.
单选题In a weather report,Z stands for（）.Azone timeBzulu timeCGreenich Mean TimeDzone standard time
单选题MDT为平均停工时间（Mean Down Time），也称为平均延误时间（Mean Delay Time），它等于（）A预防性时间+纠正性时间B纠正性时间+等待时间C纠正性时间+预防性时间+等待时间D平均修理时间-平均间隔时间
单选题The maximum difference between mean time and apparent time is （）.Aequal to the longitude expressed in time unitsBabout 16 minutesCthe difference between the GHA of mean sun and the first point of AriesD15°of arc
判断题通常使用平均修复时间MTTR（Mean Time to Repair）和平均故障间隔时间MTBF（Mean Time Between Failure）这两个指标来评价产品或系统的可靠性。A对B错
单选题A mean sun is used as the reference for solar time for three reasons. Which reason is NOT a cause for use of a mean sun?（）AThe motion of the apparent sun is along the eclipticBMeasurement of time is along the celestial equatorCThe speed of the Earth's revolution is not constantDThere are variations in the Earth's rotational speed
单选题The time interval between the transmission of signals from a pair of Loran-C stations is very closely controlled and operates with（）.AAn atomic time standardBDaylight Savings TimeCEastern Standard TimeDGreenwich Mean Time
单选题What does the author mean by moms to be in the last paragraph?AWomen who are pregnant, especially for the first time.BWomen who dream of having babies for the first time.CWomen who already have children.DWomen who have just got babies for the first time.