198.确保伺服控制组件处于打开位置。

A. 　If there is hum from the loudspeaker,don't adjust the potentiometer.

B. 　Adjust the potentiometer unless hear a hum from the loudspeaker.

C. 　Adjust the potentiometer until the loudspeaker no longer hums.

A. 　STAY

B. 　STILL

C. 　LEAVE

A. 　AWARED

B. 　FAMILIAY

C. 　KNOW

A. 　Copy density should be the same throught the page.

B. 　Copy density must be different throught the page.

C. 　Density of copy must be different throught the page.

A. 　COLLECTS

B. 　ABSORBS

C. 　DRAWS

A. 　Space permitting, legends shall be spelled out within the diagram rather
than abbreviated or keyed by numerals to a list of legends at the bottom
or on an adjacent page.

B. 　Where Space permits, legends should be illustrated in forms,rather than
briefed or typed in legend lists at the bottom or on adjust pages.

C. 　Space permitting, legends have to be explicited within the chat rather
than syncopated or keyed by numbers to a list of legends at the bottom
or on an adjacent page.

A. 　手册中所示的测量单位必须准确。

B. 　手册中给出的测量单位必须一致。

C. 　手册中的测量单位必须写明。

A. 　使用两次保护材料,以防止液压油损伤密封圈。

B. 　使用两层保护材料,以防止滑油损伤密封胶。

C. 　使用两层保护性混合物,以防止液压油损伤密封胶。

A. 　The Handbook producer should average the material within paragraphs in
a way he considers to be most informative to the kind of pilot experienced
to use the Handbook.

B. 　The Handbook manufacturer should arrange the material within paragraphs
in a sense he considers to be most useful to the kind of pilot anticipated
to use the Handbook.

C. 　The Handbook operator should arrange the document within paragraphs in
a manner he considers to be most incentive to the kind of pilot expected
to use the Handbook.

A. 　Apply mass on the surface of the patch to ensure that the parts bond
correctly.

B. 　Bear down on the surface of the patch to make sure that the parts bond
correctly.

C. 　Apply weight on the surface of the patch to make sure that the parts
bond correctly.