由于点火示波器具有配气相位鉴别能力,只要把各缸上止点标记和气门关闭时振动的波形同时显示在示波器上,就可以进行()测量。
A. 配气相位静态
B. 配气相位动态
C. 气门持续角
D. 气门叠开角
查看答案
Evaluate the following function code: CREATE FUNCTION get_dept_avg(dept_id NUMBER) RETURN NUMBER RESULT_CACHE RELIES_ON (EMPLOYEES) IS avgsal NUMBER(6); BEGIN SELECT AVG(SALARY)INTO avgsal FROM EMPLOYEES WHERE DEPARTMENT_ID = dept_id; RETURN avgsal; END get_dept_avg; Which statement is true regarding the above function?()
A. The cached result becomes invalid when any structural change is done to the EMPLOYEES table.
B. If the function execution results in an unhandled exception,the exception result is also stored in the cache.
C. Each time the function is invoked in a different session,the current result in the result cache gets overwritten.
D. If the function is invoked with a different parameter value,the existing result in the result cache gets overwritten by the latest value.
发生抢劫、盗窃事件时,事发农合机构应迅速启动防抢防盗应急处置预案,及时了解以下哪些内容?()
A. 抢劫、盗窃事件经过
B. 犯罪分子人员数量
C. 犯罪分子体貌特征
D. 犯罪分子所持武器
E. 传染疾病的扩展趋势
调速阀一般由差压减压阀与节流阀()而成。
A. 串联
B. 并联