150.THE RED LIGHTS ( ) IN HALFSECOND INTERVALS.

A. 　Database synchronization is still on.

B. 　Database synchronization is in progress.

C. 　The database is already synchronizing.

A. 　 fume

B. 　 freely

C. 　 freeze

A. 　如果轮胎温度升高超过 177 度,插头熔化且轮胎放气。

B. 　如果轮胎温度升高超过 177 度,易熔塞和轮胎融化。

C. 　如果轮胎温度升高超过 177 度,易熔塞熔化且轮胎放气。

A. 　Adjust compass system 1 until it agrees with compass system 2.

B. 　Synchronize compass system 1 with compass system 2.

C. 　Regulation compass system 1 until it agrees with compass system 2.

A. 　If you must add pages after the ahead printing, then the page should
have the number of the preceding page and an alphabetic suffix.

B. 　In the event a page must be added pursuant to the original printing,
the page shall carry the number of the preceding page with a letter suffix
added.

C. 　If you must add pages after the individual printing, then the page should
contain the serial number of the preceding page,and add a suffix letters.

A. 　无论是否经过书面许可,都不得以任何形式复制本文件的任何部分。

B. 　经出版者书面许可,可以复制本文件的任何部分。

C. 　未经出版者书面许可,不得以任何形式复制本文件的任何部分。

A. 　如果不同时这样做,则会卡住定位销。

B. 　如果不同时这样做,则会导致定位销磨损。

C. 　如果不同时这样做,则会导致定位销脱落。

A. 　Adjust the clinometer until the bubble is in the center.

B. 　Adjust the thermometer until the bubble is in the center.

C. 　Adjust the hygrometer until the bubble is in the center.

A. 　垂直列表使复杂的长句子更容易阅读和理解。

B. 　垂直方向上的清单使复杂的长句子更容易读取和理解。

C. 　长的复合句可以通过垂直列表简化以进行阅读和理解。

A. 　An appropriate caution or note shall be contained in each Handbook to
inform the operator that a current Handbook is required to be in the
airplane during flight and that it is the operator's duty to keep the

B. 　A current Handbook that an appropriate warning or note shall be obtained
in each Handbook to inform the operator is required to be in the airplane
during flight and that it is the operator's responsibility to retain the

C. 　A suitable warning or note shall be involved in each Handbook to inform
the operator that a current Handbook is required to be in the airplane
during flight and that it is the operator's responsibility to maintain
the Handbook in a current status .