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躯体失认的训练方法()

A.感觉-运动法
B.关键词法
C.自身参照
D.删除作业
E.提供视觉暗示，如在镜子上贴上“您的胡子是否两侧都刮干净了?”的纸条
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6502电气集中， （）是用来区分黄灯与双黄灯显示的。 A、ZXJ B、TXJ C、DXJ D、LXJ
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The EMPLOYEES table has these columns:LAST NAME VARCHAR2(35)SALARY NUMBER(8,2)HIRE_DATE DATEManagement wants to add a default value to the SALARY column. You plan to alter the table by using this SQL statement:ALTER TABLE EMPLOYEESMODIFY ( SALARY DEFAULT 5000);What is true about your ALTER statement?（）A.Column definitions cannot be altered to add DEFAULT values.B.A change to the DEFAULT value affects only subsequent insertions to the tablE.C.Column definitions cannot be altered at add DEFAULT values for columns with a NUMBER data typE.D.All the rows that have a NULL value for the SALARY column will be updated with the value 5000.
A.B.
C.
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