更多"[单选题]Relative wind is the direction"的相关试题:
[单项选择]I found seated at the table opposite to mine another guest. He was a decently unsociable man, anxious to ______ alone.
A. leave
B. be leaving
C. be left
D. have left
[单项选择]With respect to the rectification of the situation the author believes that ______.
[简答题]Do friends of the opposite gender distract teenagers,hampering their academic performance?It may seem obvious,and yet it is hard to prove.A survey of American schoolchildren conducted in 1995,for example,suggests no link between the proportion of a girl's friends who were boys and her grades.A new paper by Andrew Hill of the University of South Carolina,however,comes to a different result.He finds that for every 10%more children of the opposite sex among a student's friends,his or her grade-point average（GPA）declines by O.l（GPAs range from O t0 4）.Not only may having more friends of the opposite sex be bad for grades,but it has other effects,too.Among the children from the original survey who were successfully re-interviewed 14 years later,those whose grades had been dragged down by friends of the opposite gender were more likely to be married.
[单选题]_______ is the upward force created by the effect of airflow as it passes over and under the wings.
A.Lift
B.Drag
C.Thrust
D.Weight
[单项选择]In what respect are humans and animals alike in sleep
A. For both of theme only fatigue can promote sleep.
B. For both of them, overeating may promote sleep.
C. For both of them, they wake only to satisfy their bodily needs.
D. For both of them, they need to be completely satisfied to promote sleep.
[单选题]When judging the wing speed by wind sock, if the wind sock is at aclinic level, then the wind speed can be up to_______m/s.
A.5-6
B.10-12
C.15-20
D.20-25
[单选题]We should respect food and think about the people who don′t have__________we have here and treat food nicely.
A.that
B.which
C.what
D.whether
[单项选择]With respect to treating chronic Lyme, ______.
A. even the patients doubt the antibiotic treatment
B. doxycycline has been regarded as the most effective
C. doctors disagree as to the effect of strong antibiotics
D. moderate antibiotics are better than intensive ones
[单选题]The opposite meaning of “converging” is _______ .
A.diverging
B.opposite
C.diverting
D.closing
[单选题]The opposite meaning of “speed up” is _______ .
A.slow down
B.speed down
C.speed low
D.slow by
[单选题]The takeoff direction which is into the wind, which means wind direction is _______.
A.0 degree
B.180 degrees
C.90 degrees
D.270 degrees
[单项选择]The cooling wind swept through out bedroom windows, （） air conditioning unnecessary.
A. making
B. to make
C. made
D. being made
[单选题]_______ extend from about the midpoint of each wing outward to the tip, they move in opposite directions.
A.Flaps
B.Ailerons
C.Elevators
D.Anti-servo tabs
[报关编码]Because ofA the approachingB storm,the wind began to blow hardC and the sky became dark asD evening.
[单项选择]From the passage it can be assumed that wind energy is better because ______.
A. it is cheaper than electric power
B. it does not alter the environment as much as other types of power
C. it lasts longer than electric power
D. it is more efficient than electric power
[单项选择]Which of the following is NOT an advantage of wind energy
A. Wind energy does not require the flooding of large land areas.
B. Wind energy produces no waste products.
C. The availability of wind energy is not dependent on the weather.
D. Wind energy does not produce thermal or chemical effluents.
