题目内容

绘制网络图时,虚工序不占时间,其表示方法为()。

A. 虚线+箭头
B. 虚线
C. 实线+箭头
D. 空白表示

查看答案
更多问题

患者,女,22岁,贫血,鼻出血,发热,全血细胞减少,白细胞分类未见到幼稚细胞。为鉴别非白血性白血病与再生障碍性贫血,最主要检查()

A. 肝、脾、淋巴结是否肿大
B. 骨髓象中原始和幼稚细胞多少
C. 网织红细胞多少
D. 皮肤及齿龈有否浸润
E. 反复检查血象

出现应急前兆时应随时关注并与项目部保持联系,进入应急状态紧急阶段时,应保证急救器材和药品、家属、设备的车辆及时到场。()

A. 正确
B. 错误

Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID NUMBER\ SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table You created a sequence called EMP_ID_SEQ in orderto populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table. Which two statements regarding the EMP_ID_SEQ sequence are true? ()

A. You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.
B. The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.
C. The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.
D. Any other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.
E. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.
F. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.

象征傲霜坚骨的花材是()

A. 鹤望兰
B. 红瑞木
C. 菊花
D. 竹
E. 梅花
F. 连翘

答案查题题库