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【单选题】
物体相对于地球保持静止或匀速直线运动的状态称为( )。A.
静止
B.
平衡
C.
受力
D.
匀速运动
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反馈参考答案：
举一反三
【简答题】A．nervous B．happy C．excited D．frightened
【单选题】Which statement about Sal is true?
A.
Sal is the only child in her family because after giving birth to her, her mother died.
B.
Sal ’ s father was Mr. Middleton, a waterman.
C.
Sal lived in a family full of love and care although her family is as poor as Thornhill ’ s.
D.
Thornhill was haunted by the presence of so many brothers and sisters, while Sal was haunted by so many absences, and so the two of them didn ’ t enjoy a common ground.
【单选题】语句Delete emp where sal>2000;的作用是?
A.
将月薪sal大于2000的所有员工的月薪删除
B.
将月薪sal大于2000的所有表删除
C.
将月薪sal大于2000的所有员工的信息删除
D.
查询月薪sal大于2000的员工在哪里
【单选题】She was not______ frightened; in fact, she was nearly frightened to death.
A.
a bit
B.
a little
C.
at all
D.
much
【单选题】emp表是雇员信息表，sal字段存放是的雇员的月薪，以下哪个变量可以存放sal类型的值（）
A.
v_sal emp%rowtype;
B.
v_sal emp.sal%type;
C.
v_sal emp.sal.%type;
D.
v_sal %type(emp.sal);
E.
v_sal (emp.sal)%type;
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