A、 The smoke sensor in each detector monitors when the smoke density is above a previous limit. If the density keeps higher than the limit for about eight seconds, the sensor set the detector to the alarm condition.
B、 The smoke sensor in each detector monitors for smoke density above a preset limit. If the density stays above the limit for appropriately eight seconds, the sensor sets the detector to the alarm condition.
C、 The smoke transducer monitors for smoke density above a presumed limit of each detector. If the density remains over the limit about eight seconds, the transducer turn the detector to the alarm condition.
答案：B
A、 The smoke sensor in each detector monitors when the smoke density is above a previous limit. If the density keeps higher than the limit for about eight seconds, the sensor set the detector to the alarm condition.
B、 The smoke sensor in each detector monitors for smoke density above a preset limit. If the density stays above the limit for appropriately eight seconds, the sensor sets the detector to the alarm condition.
C、 The smoke transducer monitors for smoke density above a presumed limit of each detector. If the density remains over the limit about eight seconds, the transducer turn the detector to the alarm condition.
答案：B
A. As necessary, use the applicable SAFETY BARRIERS, classified by the operator＇s instructions and your local regulations. These communications are subjected to atmospheric interference and difficult to understand.
B. Use the applicable SAFETY BARRIERS, specified by the operator＇s instructions and your local regulations if necessary. These communications are affected by the atmosphere and difficult to understand.
C. Use the applicable SAFETY BARRIERS, classified by the operator＇s instructions and your local regulations if necessary. These communications are subjected to atmospheric interference and difficult to understand.
A. 变更表格的发起者通常会得到STEMG评估和决定的相关通知。
B. 变更表格的发起人通常需要告知大家相关的STEMG评估和决定。
C. 变更表格的组织通常被告知相关的STEMG条款和决定。
A. 把手放在风扇上感受震动。如果风扇是震动的，说明风扇是通电的。
B. 把手放在风扇上感受一下是否有震动。如果你感觉到震动，说明风扇是工作的。
C. 风扇在震动，把手放在风扇上是不安全的。当你感到震动时，风扇是工作的。
A. 这部分的《飞行员操作手册》包含由条例要求的或者针对飞机安全操作必要的限制因素，而这些限制因素未必得到管理部门的认可。
B. 《飞行员操作手册》此节内容仅仅包含由规章要求的或者对于飞机安全操作必要的限制因素，而且这些限制因素应得到管理部门的批准。
C. 这部分的《飞行员操作手册》不仅包含由条例要求的或者针对飞机安全操作的限制因素，而这些限制因素获得了管理部门的证明。
A. The numbering of paragraphs and subparagraphs within a section is not required.
B. No numbers of paragraphs and subparagraphs is required in a section.
C. The numeral order of the paragraphs and subparagraphs is unnecessary in a section.
A. 机身上固定位置安装的门，包括结构件、闩锁机构、把手、衬板等。
B. 在机身内的固定分隔板上装置的门。包括结构件、锁紧机构、手柄、内衬等物品。
C. 安装在机身内固定隔板上的门。包括结构件、抛锁机构、把手、内衬等组成部分。
A. If you want to use the STE specification properly, a high professional standard is required.
B. A high level of professionalism requires the correct use of STE specifications.
C. In order to use the STE specifications appropriately, high professionalism is needed.
A. Put a plug on the open end of each pipe.
B. On the opening of each pipe, put a cover.
C. Put a cover on the loose end of the pipe.
A. 该子系统包括测距机，收发机，无线电高度表，基于性能的导航，甚高频全向信标，自动定向仪等部件。
B. 该子系统包括测距机，应答机，无线电罗盘，远距离无线电导航系统，甚高频全向信标，自动定向仪等部件。
C. 该子系统包括测距机，发射机，无线电罗盘，区域导航，指点信标，自动定向仪等部件。
A. Other information or messages, e.g."Report to the manufacturer about the cracks existed", is included here.
B. Additional information or instructions,such as "Report any cracks found to this manufacturer”, are contained here.
C. You can find the following instructions here, for example " Report any scratches to the OEM".
