T or F 412The pilot intends to enter controlled airspace southeast of BKM VOR at FL240 at 34.[音频]
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T or F 420The aircraft is making a request for joining the controlled airspace.[音频]
A. 对
B. 错
T or F 418The aircraft will resume IMC flight after passing FL80.[音频]
A. 对
B. 错
T or F 784The aircraft flew at the wrong level due to the pilot’s error.[音频]
A. 对
B. 错
以下砖表面不光洁的是()
A. 玻化砖
B. 釉面砖
C. 通体砖
D. 抛光砖