[单选题]When using DES to descent, if it is higher than FMGS glide path, the navigation display presents a pseudo waypoint (interception point) along the flight plan that assumes the aircraft will return to the profile using:
A. Idle thrust and 1/2 speedbrake extension
B. ECON speed plus a margin (until intercepting the profile)
C. Both A and B are correct

[单选题]When using DES to descent, if the aircraft is below the descent profile, how to assume the interception point on the navigation display?
A. If the aircraft is flying at an altitude that is higher than both the descent speed limit altitude and the destination elevation +5000 ft: the FMGS maintains the V/S at -1000 ft/min and the target speed, until the aircraft reaches the altitude constraint, or intercepts the descent profile
B. If the aircraft is flying at an altitude that is lower than either the descent speed limit altitude or the destination elevation +5000 ft: the FMGS maintains the V/S at -500 ft/min and the target speed, until the aircraft reaches the altitude constraints, or intercepts the descent profile
C. Both A and B are correct

[单选题]The main purpose of using flexible takeoff thrust is to
A. save engine life.
B. provide a safer takeoff due to increased takeoff roll time and reduced difficulty in controlling during engine failure when takeoff with full thrust.
C. reduce engine noise and improve passenger comfort.

[单选题]The flight mode changes to flare mode when the aircraft passes ___ ft RA as it descends to land.
A.100
B.50
C.30

[单选题]For one engine out climb performance, when the specified procedure requires a turn, except if otherwise stated on the RTOW chart, the turn should be performed
A. with a maximum bank of 15 °until the aircraft reaches 1500 ft or until green dot.
B. There should not be such a procedure. If one engine is out during takeoff, the one engine out procedure must be followed. The aircraft can make maneuvers and turns only when it is above green dot.
C. As long as it is required by obstacle clearance, there is no specific limitation for the bank. However the bank is protected to a maximum of 33 °.

[单选题]When using APU bleed, air conditioning unit flow is automatically selected in：
A. high-order position
B. normal position
C. low position

[单选题]When angle-of-attack protection is active, the THS setting is limited between the setting at the aircraft’s entry into this protection and 3.5 ° nose down. (Neither the pilot nor the system can apply additional nose-up trim).Similarly, when is the THS setting limited to values between the actual setting and 3.5 ° nose down
A. when the load factor is higher than 1.25 g
B. when the aircraft exceeds 33 ° of bank
C. all of the above

[单选题]三重 DES 是一种加强了的DES 加密算法，它的有效密钥长度是DES 算法的（）倍。
A.2
B.3
C.4
D.5

[单选题]Use of the AP or FD in OPEN DES or DES mode is not permitted in final approach, unless the FCU altitude is set to ____
A. go-around altitude
B. 900ft AGL
C. 500ft AGL

[单选题]进近时在OPEN DES或DES方式下可以使用AP/FD：
A.不能接通AP/FD
B.不可以接通AP/FD，除非将FCU高度设置到高于MDA/H或500英尺AGL，以较高的为准
C.可以接通AP/FD但必须将FCU高度设置到复飞高度并监控进近

[单选题]AES 在抵抗差分密码分析及线性密码分析的能力比 DES 更有效，已经替代 DES 成为新的据加密标准。其算法的信息块长度和加密密钥是可变的，以下哪一种不是其可能的密钥长度？
A.64bit
B.128bit
C.192bit
D.256bit

[单选题]最后进近中A320飞机在OPEN DES或DES方式下不允许使用AP或FD除非FCU的高度设置为：
A. 复飞高度
B. 900英尺AGL
C. 500英尺AGL

[单选题]AES 在抵抗差分密码分析及线性密码分析的能力比 DES 更有效,已经替代DES 成为新的据加密标准。其算法的信息块长度和加密密钥是可变的,以下哪一种不是其可能的密钥长度?
A.64bit
B.128bit
C.192bit
D.256bit

[单选题]TripleDES是一种加强了的DES加密算法，他的密钥长度和DES相比是它的几倍（）
A.2倍
B.3倍
C.4倍
D.5倍

[单选题]When happens when CAPT3 is selected?
A. Pilot uses the observer’s audio equipments
B. Observer uses pilot’s audio equipments
C. Pilot uses third occupant’s ACP

[单选题]DES是( )算法
A.对称密钥加密
B.非对称密钥加密
C.公开密钥加密
D.私有密钥加密

[单选题]DES provides managed vertical guidance along the descent path. Which of the following statement is correct?
A. The system computes the profile backwards from the “deceleration point” up to the “top of descent”, with respect to the speed and altitude constraints at the deceleration point, the guidance begins the deceleration to VAPP, to be reached at 1000 ft above touchdown on the final descent path.
B. If the aircraft is above the descent profile, the speed will increase toward the upper limit of the managed speed range. If the speed reaches the upper limit, the aircraft will maintain the speed but will deviate from the profile (autothrust at idle)
C. Both A and B are correct

[单选题]DES 算法是哪种算法？
A.对称密钥加密
B.非对称密钥加密
C.哈希算法
D.流加密

[单选题]CL and DES are controlled by:
A. altitude selected manually on FCU
B. aircraft weight calculated by FMGC
C. flight planning point (CL top and DES top)