The airport's flow of international passengers for July is ______ the figure for the corre
A、260 Hz
B、250 Hz
C、240 Hz
D、235 Hz
A、A. 270
B、B. 278
C、C. 291
D、D. 318
Moving the pilot 15 , the man took his seat and listened carefully to the urgent instructions that were being sent by radio from the airport 16 .The plane was nowdangerously close to the ground, but to everyone's 17 , it soon began to climb.The man had to circle the airport several times in order to become 18 with the controls.But the danger had not yet passed.The terrible 19 came when he had to land.Followinginstructions, the man guided the plane toward the airfield.It shook violently 20 it touched the ground and then moved rapidly along the runway and after a long run it stopped safely.
11.A.then
B.while
C.although
D.therefore
12.A.exposed
B.shifted
C.appeared
D.presented
13.A.informed
B.ensured
C.inquired
D.instructed
14.A.first
B.best
C.length
D.least
15.A.aside
B.back
C.off
D.about
16.A.under
B.down
C.near
D.below
17.A.relief
B.pleasure
C.horror
D.trust
18.A.familiar
B.close
C.intimate
D.understood
19.A.idea
B.affair
C.moment
D.movement
20.A.unless
B.so
C.while
D.As
Moving the pilot 26 , the man took his seat and listened carefully to the urgent instructions that were being sent by radio from airport below.The plane now was dangerously close to the ground, but to everyone's 27 ,it soon began to climb.The man had to circle the airport several times in order to become 28 with the controls.But the danger had not yet passed.The terrible 29 came when he had to land.Following instructions, the man guided the plane toward the airfield.It shook violently as it touched the ground and then moved rapidly 30 the runway and after a long run it stopped safely.
21.A.then
B.while
C.although
D.therefore
22.A.still
B.well
C.quiet
D.calm
23.A.fainted
B.failed
C.faded
D.fallen
24.A.last
B.least
C.length
D.first
25.A.delay
B.hesitation
C.doubt
D.surprise
26.A.back
B.off
C.about
D.aside
27.A.pleasure
B.horror
C.relief
D.trust
28.A.familiar
B.close
C.understood
D.easy
29.A.movement
B.idea
C.moment
D.age
30.A.around
B.over
C.above
D.along
A、customers
B、riders
C、flyers
D、passengers
1. Explain the following terminologies: The generalized Hooke's law Strain energy per unit volume, for normal and shearing stress: Incremental theories: Total strain theories: Ture stress: True strain: 2. A cubic metal, with the edge length of 200 mm, elastic modulus E = 207×1000 MPa, and Poisson’s ratio ν = 0.3, is compressed along Z direction, and the metal expands along X and Y directions. If the compression along Z direction is 200 MPa, in order to limit the expansion along X and Y directions within 0.05 mm, what is the compression should be applied along X and Y directions?
B.were just been unloading
C.had j ust unloa
D.were just being unloaded
B.took off already
C.had already taken off
D.has already taken off
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