影响悬停稳定性的因素不包括()
A.起落架形式。
B.风的影响。
C.地面效应的影响。
参考答案:A
机车车辆限界最大宽为()。
The streets of the Dual Springs neighborhood, a migrant-worker hub in northern Beijing, are ______ . That’s no surprise; more than 13,000 people have been quarantined in China’s capital to halt the insidious spread of severe acute respiratory syndrome (SARS).
A.deserted
B.vacated
C.unlived in
D.removed