船舶在入海河口航行,应熟悉航道,熟知航标特征及各标间的().
A. 航向、航程
B. 发光形式
C. 发光颜色
D. 相对位置
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在海湾二维水质预测中,通常需要采用(),同时计算潮流场和浓度场。
A. 动态模式
B. 静态模式
C. 数量模式
D. 数值模式
()能更好地反映种子发芽速度和发芽整齐度,表示种子生活力的强弱程度。
跨落带高度取决于()。
A. 采出厚度
B. 上覆岩层的岩性
C. 碎胀系数
D. 煤层倾角
E. 采煤工艺
You work in a company which uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance which contains multiple Agent jobs. The jobs run each job on each day of the week by using seven shared schedules. You must make sure that a job named Job4 doesn';t run Wednesday. So what action should you perform to achieve this goal?()
A. You should remove the schedule for Wednesday from Job5.
B. You should add a new Job5 schedule for Wednesday and disable it.
C. You should delete the schedule for Wednesday.
D. You should disable the schedule for Wednesday.&e