单选题 A servo-assisted altimeter is more accurate than a simple altimeter because the small movements of:

单选题 Static pressure affects:

单选题 The density altitude is:

单选题 If an aircraft is equipped with one altimeter which is compensated for position error and another altimeter which is not, and all other factors being equal:

单选题 If the pilot increases the reference pressure using the sub-scale setting knob, the altitude indicated by the altimeter：

单选题 At sea level, on a typical servo altimeter, the tolerance in feet from indicated is:

单选题 The QNH is by definition the value of the:

单选题 The primary factor which makes the servo-assisted altimeter more accurate than the simple pressure altimeter is the use of：