The low gravity ___ they are able to move around easily.
A.tells
B.stands
C.means
D.looks
A.tells
B.stands
C.means
D.looks
第1题
no gravity, there would be no air around the earth.
A.Were there
B.There were
C.Was there
D.There be
第4题
A.If it is
B.Were it
C.If it being
D.It were
第5题
What is the purpose of the limit switch on gravity davits?
A.To cut off the power when the davits hit the track safety stops
B.To stop the davits from going too fast
C.To cut off the power when the davits are about 12 inches or more from the track safety stops
D.None of the above
第6题
Gravity is sure to play an important part, ___ the ball ___ into the air won’t go up.
A.as, thrown
B.for, thrown
C.since, throwing
D.as, throwing
第7题
Reducing free surfaces has the effect of lowering the ______.
A.uncorrected KG
B.virtual height of the center of gravity
C.metacenter
D.metacentric height
第8题
A ship which is required to carry an Oil Record Book must log in the book ______.
A.discharge of ballast or cleaning water from fuel tanks
B.sounding levels of all fuel tanks on a daily basis
C.the grade and specific gravity of all fuel oil carried
D.fuel consumption rates on a weekly basis
第9题
Mean low water is the average height of ______.
A.the surface of the sea
B.high waters and low waters
C.all low waters
D.the lower of the two daily low tides
第11题
"Low" work here means ______.
A.work with brains
B.work with hands
C.the work that people do at home
D.the work scientists do in the lab