音高(Pitch)
第1题:
第2题:
Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.()
A对
B错
第3题:
The most powerful signal of stress is a change of pitch on the vowel.()
第4题:
Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.()
第5题:
pitch
第6题:
当正副驾驶的姿态、指示,即俯仰、翻滚、指示相差5度时()。
第7题:
第8题:
音高同、名称异
音高名称相同
音高名称不同
音高异、名称同
第9题:
第10题:
第11题:
the propeller diameter
the propeller radius
the pitch angle
the length of helix
第12题:
Hydraulic
Mechanical
Pneumatic
Electrical
第13题:
“他说话声音高,真可以说是声如洪钟”的“声音高”是指音高。
A对
B错
第14题:
音名(Pitch name)
第15题:
pitch()
第16题:
宫音阶只有相对音高,没有绝对音高。
第17题:
乐音体系中的等音是()。
第18题:
对
错
第19题:
Slightly higher fuel consumption
Lack of directional control when backing
Inefficient at high shaft RPM
Some unusual handling characteristics
第20题:
A variable pitch propeller
A variable pitch nut
A fixed pitch parallel
A fixed pitch screw
第21题:
apparent slip
tree slip
pitch
propulsive efficiency
第22题:
more efficiently uses available engine power
operates at a lower efficiency at a fixed speed
produces the same torque at lower engine power
develops its rated power at a lower speed
第23题:
fixed pitch propellers
uncontrollable pitch propeller
constant pitch propellers
variable pitch propellers