If the radio signal is not clear, ad

单选题 If the radio signal is not clear, adjust the frequency.

A、如果无线电信号不清晰,调整频率.

B、如果电子信号不清楚,调整波长.

C、如果广播信号不清楚,测试频率.

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相关试题

单选题剪断并抛弃保险丝。

A、Cut and discard the lockwire.

B、Snip and remove the lockwire.

C、Snip and discard the cable.

单选题因此，词组中的单词越多，理解起来就越困难。

A、Thus, the more words there are in a cluster, the more difficult it is to understand.

B、Therefore, the more words are there in a phrase, the more difficult it is to understand.

C、So, the more nouns in a phrase, the harder it is to understand.

单选题与可选系统或设备有关的限制可包括在本节或第9节补充中。

A、Limitations related to operable systems or equipment may contain in this section or in section 9, supplements.

B、The supplements in this section or section 9 include the limitations associated with selectable systems or equipment.

C、Limitations associated with optional systems or equipment may be included in this section or in section 9, supplements.

单选题航道与跑道中心线对齐。

A、The fairway and the runway centerline should align .

B、The localizer course is aligned with the centerline of the runway.

C、The localizer aligns with the center of the runway.

单选题本手册中的定义应与联邦航空法规中的定义一致。

A、Definitions in this manual shall be conformed with those in the Federal Aviation Legislations.

B、Definitions in the handbook shall be consistent with definitions contained in the Federal Aviation Regulations.

C、Definitions in the Federal Aviation Regulations shall be consistent with definitions contained in the handbook.

单选题这种材料能很好地防止腐蚀。

A、This module gives good procession from defect.

B、This metal gives good protection from erosion.

C、This material gives good protection from corrosion.

单选题在一节内不要求对各段及分段进行编号。

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.

单选题慢慢地将杆完全伸出，并确保它不接触其它部件。

A、Completely retract the rod slowly and ensure not to touch other components.

B、Slowly protect the bar and guarantee not touching other parts.

C、Slowly extend the rod fully and make sure that it does not touch other parts.