【单选题】词汇与结构 The____ is the Pilot in Command (PIC) who has the final authority of all decisions.
【判断题】在一般情况下气固相催化反应的控制步骤是反应物分子在催化剂表面上发生的化学反应整个过程受化学动力学控制。()
【单选题】在一般情况下,气-固相催化反应的控制步骤是(),整个过程受化学动力学控制
A.
反应物分子从气流中通过层流边界层向催化剂外表面扩散.
B.
反应物分子从催化剂外表面通过微孔向催化剂内部扩散.
【单选题】The pilot in command has emergency authority to exclude any and all persons from admittance to the flight deck
A.
except a CAAC inspector doing enroute checks
B.
in the interest of safety
C.
except persons who have authorization from the certificate holder and the CAAC
【单选题】词汇与结构 The Pilot in Command is responsible for operating an airplane in accordance with rules of the air, and has final_____as to the disposition of the airplane while in command.