单选题
697.The sequence of topics in the Handbook is intended to increase in-flight usefulness.
A
The order of topics in the Handbook is intended to increase in-flight usefulness.
B
The sequence of topics in the Handbook is intended to increase in-flight useless.
C
The sequence of topics in the Handbook is pretended to increase in-flight usefulness.
答案解析
正确答案:A
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