单项选择题
单项选择题 阶段表示井田的一部分范围,水平指布置大巷的某一标高的水平面,但广义的水平(开采水平)不仅表示一个水平面,同时也指一个范围,即包括所服务的阶段。 A. 对 B. 错
单项选择题 水准尺向前或向后方向倾斜对水准测量读数造成的误差是( )。 A. 偶然误差 B. 系统误差 C. 可能是偶然误差也可能是系统误差 D. 既不是偶然误差也不是系统误差
判断题 会议策划与活动管理一脉相承。
单项选择题 Block format and point-by-point format are two commonly used patterns of organization that can be used to write a compare/contrast essay. Please select from the following choices the one whose format conflicts with its examples. A、Block format: Paragraph1-apples Color Flavor Variety Paragraph2-oranges Color Flavor Variety B、Point-by-point format: Paragraph1-color of apples and oranges Paragraph2-flavor of apples and oranges Paragraph3-variety of apples and oranges C、Block format: Paragraph1 - color and flavor of apples and oranges Paragraph2 - variety of apples and oranges D、---
判断题 CR400AF动车组中,将撒砂拨键开关拨至“前”位置(运行的方向)开始本车前轮对的撒砂;拨至“后”位置,开始整车撒砂。( )