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举一反三
【简答题】Fill in the blanks with the proper form of words given in brackets. The difficult work (courage) Alan and he left school. The (punish) was too harsh for him. They decided to (decorate) the room with m...
【单选题】Half of the students done most of the work. The rest of the work rather difficult. [ ]
A.
have ; is
B.
has ; are
C.
have ; are
D.
has ; is
【单选题】_____ it was finished in time.
A.
As the work was difficult
B.
Difficult as the work was
C.
Difficult as was the work
D.
As was the work difficult
【单选题】金属材料的强度极限σb是指()。
A.
金属材料在外力作用下产生弹性变形的最大应力;
B.
金属材料在外力作用下出现塑性变形时的应力;
C.
金属材料在外力作用下断裂时的应力;
D.
金属材料在外力作用下出现弹性变形时的应力。
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