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【单选题】
关于变量(常量)的声明,下述语句错误的是 ( )。A.
v_count NUMBER(6);
B.
v_count NUMBER(6):=0;
C.
NUMBER(6) v_count;
D.
v_count CONSTANT NUMBER(6) DEFAULT 10;
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反馈参考答案：
举一反三
【简答题】A friend of mine is a department manager at a large company. His secretary requested a 10% salary raise. The problem was that 10% was a large raise compared to the 5% other employees had received. Was...
【简答题】A friend of mine is a department manager at a large company. His secretary requested a 10 % salary raise. The problem was that 10 % was a large raise compared to the 5% other employees had received. W...
【单选题】使用万用表时要注意以下哪项（）
A.
使用前要机械回零
B.
测量电阻时，转换档位后水必进行欧姆回零
C.
测量完毕，转换开关置于最大电流档
D.
测电流时，最好使指针处于标尺中间位置
【简答题】A friend of mine is a department manager at a large company. His secretary requested a 10% salary raise. The problem was that 10% was a large raise compared to the 5% other employees had received. Was...
【简答题】A friend of mine is a department manager at a large company. His secretary requested a 10% salary raise. The problem was that 10% was a large raise compared to 5% other employees had received. Was the...
【简答题】使用万用表时要注意哪些问题？
【简答题】(2017.06) 30.The traffic was so much noise that I couldn’t hear what he __________ .A. is sayingB. wassayingC. hassaidD. will say
【单选题】级A2017.6 30.The traffic was making so much noise that I couldn’t hear what he____________.
A.
is saying
B.
was saying
C.
has said
D.
will say
【单选题】1979年国际生化协会为了使酶活性单位与( )的反应速率相一致,推荐用katal单位。
A.
常用单位
B.
国际单位制（SI）
C.
参考单位
D.
酶活性浓度单位
E.
催量单位
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