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【多选题】
紧急程度是表明对公文送达和办理时间要求的标识符号。公文的紧急程度标志分哪几种？( )A.
急件
B.
紧急
C.
特急
D.
限时发送
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反馈参考答案：
举一反三
【简答题】短文听力填充(2): One of the most significant _____________1 of aircraft design is CG. It is the _____________ 2 point where the mass or weight of an aircraft may be said to center; that is, a point around w...
【简答题】在配制蓄电池的电解液时应该注意哪些事项？
【单选题】—May I go out tonight? —Of course you can, _____ you promise to be back before 10 o’clock.
A.
as soon as
B.
as well
C.
as long as
D.
as usual
【简答题】请任选中学生物课程教材某一节的内容,根据自己的理解,撰写一节课的教案( 45 分钟)。
【单选题】The speed of an aircraft is given to be 950 km/h. If the speed of sound at that location is 315 m/s, the Mach number is
A.
0.63
B.
0.84
C.
1.0
D.
1.07
E.
1.20
【判断题】If an aircraft exceeds its critical angle of attack in a climb, the wings may stall.( )
A.
正确
B.
错误
【简答题】Aircraft Lost Getting lost in an aircraft is a potentially erous situation, especially when low on fuel. If a pilot becomes lost, there are some good common sense procedures to follow. If a town o...
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