滴虫性 * * 炎选用的 * * 冲洗液为
A.生理盐水B.5%的碳酸氢钠溶液C.0.1%的新洁尔灭溶液D.1%的乳酸E.20%的硼酸
参考答案:D
一般说油品酸值越高,在油中所含的酸性物质就愈高。
TEACHER(讲师)表中列的定义如下: Name Null Type -------------------- ---------------- ----------------- TEACHER_ID NOT NULL NUMBER(9) NAME VARCHAR2(25) SALARY NUMBER(7, 2) SUBJECT_ID NOT NULL NUMBER(3) SUBJECT_DESCRIPTION VARCHAR2(2) 如要将所有教科学的讲师的工资提高8‰科学讲师的subject_id为011,应使用如下的哪个语句
A.UPDATE teacher SET salary=salary * 1.08 WHERE subject_description LIKE ’SCIENCE’;B.UPDATE teacher SET salary=salary * .08 WHERE subject_description LIKE ’SCIENCE’ AND subject_id=011;C.UPDATE teacher SET salary=salary * 1.08 WHERE subject_id=011;D.UPDATE teacher SET salary=salary+(salary * .08) WHERE subject_description LIKE ’SCIENCE’ OR subject_id=011;