Goal Motion摄影
Goal Motion摄影
相关考题：
The missiles missed their _________, so the research group did not reach its _________. A.target, targetB.goal, goalC.goal, targetD.target, goal
It is stated in astrology that ________.[A] the sun is so distant from us that it was hard to follow its motion[B] the sun was moving westward around the sky[C] the motion of the sun is at the rate of about thirty degrees every week[D] the motion of the sun is similar to the revolution of the earth around the sun
Pitching is angular motion of the vessel about what axis(轴)?A.LongitudinalB.TransverseC.VerticalD.Centerline
As the designated rudder angle is being achieved, as a result of the original command input, the steering gear follow-up mechanism is ______.A.in motion, providing a null inputB.not in motion, thus providing a null inputC.in motion, providing an input to place the main pump on maximum strokeD.in motion, providing an input to place the main pump at null stroke
The securing systems for containers were developed to prevent container movement during which ship motion ________．A.SurgeB.RollC.SwayD.Yaw
A pattern that at the crest the motion of each particle is forward and at the trough it is backward relative to the wave's motion is ______．A.a trochoidB.a spheroidC.a loxodromeD.a carene
When the relative motion display is selected all tracked objects will display ______ vectors．A.motionB.stationaryC.dynamicalD.flashing
共用题干Motion SicknessLiving in space looks like lots of fun.You can do certain things in space(like floating around,or pushing huge objects)that you cannot do on earth.But being in space can do things to you,too.If you stay too long in a gravity-free environment,your bones could become weak,and a small spaceship just might annoy you after a while,because space travel could make you seasick!On July 4, 1982,after seven days orbiting the earth,astronauts Thomas K. Mattingly and Henry W. Hartsfield returned home.Although not all of the experiments on board worked properly,the flight basically seemed to be a success except for one"little"thing: early in the flight,astronaut Hartsfield became"seasick".Thomas Mattingly,who is also a jet pilot and is highly resistant to motion sickness on earth,did much better.Mattingly sailed through space with a steady stomach.But no one knows why Hartsfield felt uneasy and Mattingly did not.So far it seems there is no reliable way to predict who will become motion sick in outer space and who will not.In all,at least four astronauts have suffered from space motion sickness. Russian and American scientists are working together to try to understand and solve the motion sickness.Space program officials worry that if so many highly-trained pilots get sick in space,what will happen when civilians start flying in the shuttle?Motion sickness is a disagreeable feeling that comes from the pitching,rolling, swaying,or just the moving of the object you are riding in or on.Symptoms of motion sickness include:dizziness,headache,a sinking feeling in the stomach,and vomiting （呕吐）.Why does motion make some people ill?Doctors believe that motion sickness is caused by a disturbance in the inner ear.Our ears do more than give us hearing.A part of the ears gives us a sense of balance and helps make us aware of whether we are right side up or upside down.If you know that you get carsick or seasick,what can you do?Speak to your doctor. There are certain medicines available that can help stop that uneasy feeling.But many of them can also make you sleepy.Usually they work best takenbefore you begin feeling ill.Some people also recommend water,ice cubes,mints,or plain toast.But these remedies do not always work for everyone.Perhaps,since motion sickness is such a big problem in outer space,researchers may soon find a way to cure the astronauts一and those of us who stay on earth.Untrained civilians are more likely to suffer from motion sickness in a spacecraft.A:Right B:Wrong C:Not mentioned
单选题The projection on a shaft designed to change circular motion into up and down or back and fore motion is called （）.AwheelBcrankshaftCrunning gearDcam
单选题The connecting rod is fitted between the crosshead and the crankshaftI t transmits the firing force, and together with the crankshaft converts the （）motion to a （）motion.Arotary；reciprocatingBup and down；fore and aftCfore and aft；up and downDup and down；rotary
单选题Wristpin bearings are difficult to lubricate because of their oscillating motion and（）Atheir free-floating designBtheir relatively small sizeCthe reciprocating motion of the pistonDtheir position in the lubrication system
单选题The exhaust ports of a diesel engine using the cross-flow scavenging method are opened and closed by the （）Areciprocating motion of exhaust valvesBrotary motion of the camshaftCreciprocating motion of the pistonDdeveloped differential
单选题What is the lifesaving signal for You are seen -assistance will be given as soon as possible?（）A3 white star signalsBHorizontal motion with a white flagCVertical motion of a white lightDCode letter K by blinker light
单选题The angular motion of a ship in the athwart ship is termed（）.ApitchingByawingCrollingDtracking
单选题The linear motion of a diesel engine piston is converted to the rotary motion required to drive gears, propeller shafts, and generators by the （）.AflywheelBcrankshaftCjournal bearingsDcamshaft
单选题When using carbon dioxide to fight a fire on a bulkhead，the CO2 should be applied（）.Afirst to the bottom of the flaming area，sweeping from side to side，and following the flames upwardBin a circular motion from the middle of the bulkhead outwardCto the top of the flaming area，sweeping from side to side，and working toward the bottomDin an up-and-down motion from one side of the bulkhead to the other
单选题The securing systems for containers were developed to prevent container movement during which ship motion?（）ASurgeBRollCSwayDYaw
单选题The connecting rob is fitted between the crosshead and the crankshaftIt transmits the firing force, and together with the crankshaft convert the （） motion to a （） motion.Arotary；reciprocatingBup and down；fore and aftCfore and aft；up and downDup and down；rotary