判断正误true or false: 当选择速度方式时，第一次选择接通CLB或DES方式，第二次选择接通IAS方式。When push the speed mode, first selection engages CLB or DES, second selection engages IAS mode.

请简述SOP中不同高度所对应的推荐爬升速度。Please briefly describe the recommended climb speeds for different altitudes in the SOP.

以先启动左发为例，简述燃油供油单向活门测试程序及注意事项。Brief introduction fuel feed check valve test procedure and CAUTIONS (Take first start left engine as example)

请简述初始检查时怎么检查液压面板？Please brief how to check hydraulic panel during originating check?

（ ）海里之前，飞机位置正常，方向可以正常控制，禁止手扶前轮转弯手柄，防止大速度时误动前轮转弯手柄，产生方向突变，损伤前轮机构和轮胎，甚至侧滑和方向失控。Before ( ) knots, aircraft position is normal, the direction can be controlled normally, it’s forbidden to touch nose wheel tiller in order to prevent sudden direction change at large
speed due to moving the nose wheel tiller accidently, it can result in damage of nose wheel assembly and wheel, furthermore, sideslip and loss of direction control.

正常情况下，在发动机关车前需要确认满足哪些条件?Normally, engine cannot be shut down beforeconfirming the following situations：

当天飞行结束后且无机务人员接收飞机时，则执行“离机检查”。At the end of the flight of the day, if no maintenance personnel takes over the aircraft, carry out the "TERMINATING CHECK".

在发动机关车前，须确保外部交流电源或APU 电源可用。Ensure either external AC electrical power or APU electrical power is available prior to shutting down the engine.

反推慢车在25-30％ N1 之间。Reverser thrust idle is 25 - 30% N1.

可以在前轮未接地前刹车。It is allowed to apply brakes before nose wheel touchdown.

主轮接地后应使用反推，以作为机轮刹车的补充。Thrust reversers shall be used after main wheels on the ground as a supplement to the wheel brakes.