The flow of fluid through the valve must be continuous.

A. 确保在表1中给定的范围内进行测量。

B. 确保在表1中给定的范围内进行调节。

C. 确保按照表1中的数值进行校准。

A. Write the instructions in the mandatory mode.

B. Write the instructions in the imperative form.

C. Write the instructions in the active mode.

A. To give indications and test to the wing/body overheat system, 115v ac power must be connected. When installing an element, do not bend the element unless the bend radius is less than one inch. If the bend radius is less than one inch, damage to the eleme

B. For the indications and test of the wing/body overheat system, 115v ac power must be ON. When you install an element, do not bend the element until the bend radius is less than one inch. If the bend radius is less than one inch, damage to the element can

C. 115v dc power must be supplied for the indications and test of the wing/body overheat system. When you install an element, do not bend the element radius less than one inch. If you bend the radius less than one inch, damage to the element can occur.

A. A maximum distance of 50 feet is required between consumable materials and the work area.

B. Keep flammable materials at a minimum distance of 50 feet from the work area.

C. Explosive materials must be kept at least 50 feet away from the work area.

A. The purpose of the Strategic Action Plan is to perform beyond the scope of the convention to ensure that ICAO deals with the challenges for civil aviation in the new era and meets the requirements of all its Member States.

B. The Strategic Action Plan is designed to work within the framework of the convention to ensure that ICAO responds to the major challenges for civil aviation in the coming years and meets the need of all its Member States.

C. The aim of the Strategic Action Plan is to implement within the scope of the convention to make sure that ICAO flinches from challenges for civil aviation in the coming era and meets the requirements of its Member States.

A. Removal of the cover is necessary.

B. It is necessary to install the cover.

C. It is a must to remove the cover.

A. The rest information could be shown on the cover plate.

B. Other information may be displayed on the cover.

C. The cover will show the other information.

A. If a supply shutoff valve was closed within five minutes, no maintenance performance is needed and shutoff periods are not accumulated.

B. Maintenance action is not necessary and shutoff periods are not calculated unless the shutoff valve was closed for less than five minutes.

C. When a supply shutoff valve was closed for five minutes, maintenance action is hardly required and shutoff duration are not included.

A. 描述飞机发动机时，应说明新发动机和拆装后发动机的正确维修操作方法。

B. 描述飞机发动机时，应说明新发动机和损坏后发动机的正确操作和保养。

C. 描述飞机发动机时，应说明全新发动机和磨合期后发动机的正确操作和保养。

A. The manufacturer may establish procedures to provide drawback on unairworthy conditions.

B. The manufacturer may establish procedures to provide response on unairworthy conditions.

C. The manufacturer may establish procedures to provide recall on unairworthy conditions.