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【单选题】
Leaf-mining hispides blighted
A.
A forage grass
B.
B rice fields
C.
C coconut trees
D.
D fruit trees
E.
E water hyacinth
F.
F parthenium weed
G.
G Brazilian beetles
H.
H grass-scale insects
I.
I larval parasites
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参考解析：
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【单选题】An Argentinian weevil may be successful in wiping out
A.
A forage grass
B.
B rice fields
C.
C coconut trees
D.
D fruit trees
E.
E water hyacinth
F.
F parthenium weed
G.
G Brazilian beetles
H.
H grass-scale insects
I.
I larval parasites
【单选题】The thrust of solid rocket engine can be controlled by ____.
A.
Control valve
B.
Secondary injection technic
C.
Different design of grain shape
D.
Vectoring nozzle
【多选题】About "Minuteman III", which of following are true? ____.
A.
It is intercontinental missile
B.
It is ballistic missile
C.
The third stage adopts solid rocket engine
D.
It has a firing range of more than 12,000 kilometers
【单选题】When bidirectional swinging nozzle’s two opposite nozzles swing in the same direction, it could controls the ____ motion of the rocket.
A.
Yaw
B.
Pitch
C.
Rolling
D.
Sideslip