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【单选题】
（）是指金属材料在载荷作用下，抵抗塑性变形和断裂的能力。A.
强度
B.
塑性
C.
硬度
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【简答题】It lowers stress but boosts ( ) power.
【单选题】The other two bills ______existing laws in Japan and aimed to give the government the power to mobilize the Self-Defense Force.
A.
rectified
B.
revised
C.
rewrote
D.
polished
【单选题】The word 'boosts'(Para. 5) means ______.
A.
kicks
B.
increases
C.
aggrandizes
D.
supplements
【单选题】'Salty' Rice Plant Boosts Harvests British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to bec...
A.
They are students at Sus University.
B.
They are rice breeders.
C.
They are husband and wife.
D.
They are colleagues at an institution of higher learning.
【简答题】It lowers stress but boosts ( )
【单选题】The virus can affect the computers in the computer system by ______.
A.
turning off the power
B.
them copy itself
C.
sending them copies of itself
D.
sending them some destructive ordens directly
【简答题】A．Once a week. B．Once a month. C．Once a semester. D．Once a year.
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