A、 安装封圈时,确保开口朝前;
B、 安装卡簧时,确保开口朝上;
C、 安装卡簧时,确保开口朝前;
答案：C
A、 安装封圈时,确保开口朝前;
B、 安装卡簧时,确保开口朝上;
C、 安装卡簧时,确保开口朝前;
答案：C
A. 这种物质在高浓度时是有毒的。
B. 在高度浓缩后,这种材科会有毒。
C. 这种材科在高温下会易燃。
A. 在小型永久装订的手册中,制造商有权利从各个页面中省略制造商的标头,岀版物标题,飞机型号以及发行和修订日期或代码
B. 在小型暂时修订的手册中,制造商有机会从各个页面中省略制造商的标头,岀版物标题,飞机型号以及发行和修订日期或代码
C. 在小型永久装订的手册中,制造商必须从各个页面中省略制造商的标头,岀版物标题,飞机型号以及发行和修订日期或代码
A. Be careful when you put your hand onto printed circuit boards.
B. Be careful when you get close to printed circuit boards.
C. Be careful when you remove printed circuit boards.
A. 更换磨损超过最大限度的部件。
B. 更换部件,磨损已超过最小限度。
C. 拆卸元件,磨擦已超过最大限度。
A. complex sentence structure and the large number of meanings and antonym that many English words have can cause confusion
B. complex sentence structure and the large number of meanings and synonyms that many English words have can cause confusion
C. complex sentence structure and the large number of meanings and diverse that many English words have can cause confusion
A. 放出适量燃油。
B. 注入大量的滑油。
C. 加入所需量的滑油。
A. 在表面盖上一层塑料传输板。
B. 在表面放置塑料材料板。
C. 在表面覆盖一层透明的塑料膜。
A. Before drilling the hole, make sure that the point of the drill head is sharp.
B. Prior to drilling the hole, make sure that the point of the drill bit is sharp.
C. Before you make the hole, make sure that the point of the drill bit is sharp.
A. No matter which method is adopted, the form of any publication shall comply with GAMA and use the identical basic numbering system.
B. Regardless of method used, any publication conforming to the GAMA format will use the same basic numbering system.
C. In spite of method adopted, any publication will adopt the same basic numbering system complying with the GAMA format.
A. Both master schematic diagrams and system function of complex systems should be for simplicity of presentation and understandability.
B. Complex systems should be divided into system function but not overall master schematic diagrams for homeliness and a better understanding of presentation.
C. For simplicity of presentation and understandability, complex systems should be divided into either system function or overall master schematic diagrams.
