更多"The maximum difference between mean"的相关试题:
[单项选择]MSTP设备运行的平均无故障时间（MTBF-Mean Time Between Failure）应不小于（）。
A. 50000小时
B. 60000小时
C. 80000小时
D. 100000小时
[单项选择]A signal indicating Greenwich mean time would be preceded with（）.
A. a code hoist to indicate Greenwich mean time to follow
B. the letter G
C. the letters GT
D. the letter Z
[单项选择]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
[单项选择]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 standard
B. Daylight Savings Time
C. Eastern Standard Time
D. Greenwich Mean Time
[单项选择]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 ecliptic
B. Measurement of time is along the celestial equator
C. The speed of the Earth's revolution is not constant
D. There are variations in the Earth's rotational speed
[单项选择]If they mean to you（）they mean to me, they may perhaps be helpful also to our sons for their guidance and inspiration.
A. who
B. what
C. that
D. just as
[单项选择]Three SHORT BLASTS mean（）.
A. I am altering my course to starboard
B. I am altering my course to port
C. I am operating astern propulsion
D. I am operating ahead propulsion
[单项选择]英文词汇Delay time、Dead time、Decay time分别代表（）时间。
A. 寂静、延迟、下降
B. 下降、寂静、延迟
C. 延迟、下降、寂静
D. 延迟、寂静、下降
[单项选择]What does salt water draft mean?（）.
A. It means summer draft
B. It means maximum draft
C. It means fresh water draft
D. It means seawater draft
[单项选择]Heights are expressed（）meters above mean high water.
A. in
B. on
C. by
D. with
[单项选择]Longitudinal and transverse separtions between the tanks,which are used to prevent liquids from leaking from one double bottom tank into the other ,are called（）.
A. double bottoms
B. cofferdam
C. navigating bridge
D. superstructure
[单项选择]The difference between international and national Navtex Service is limited to（）.
A. frequency allocated
B. both language and frequency
C. language used
D. transmission power and time
[单项选择]The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?（）
A. Cross
B. Parallel
C. Counter
D. Circular
[判断题]The distinction between competence and performance was proposed by F. de Saussure.
[单项选择]What does the term to navigate with caution mean?（）.
A. To navigate intentionally
B. To navigate intensely
C. To navigate carefully
D. To navigate completely
[单项选择]An on-load release system on a survival craft means the cable can be released（）.
A. only when the load is taken off the cable
B. only when there is a load on the cable
C. only when activated by the controls at the lowering station
D. at any time
[单项选择]For a floating vessel，true mean draft is always the（）.
A. average of the observed drafts
B. draft at the center of flotation
C. draft corresponding to the calculated displacement
D. mean of the calculated drafts
