皮皮学，免费搜题
登录
搜题
【单选题】
在所有起落架可收放的飞机上,必须安装专门装置,以便A.
在空速大于结构安全允许值时,防止起落架放出.
B.
起落架在收上位置时,防止油门被收到低于安全功率位置.
C.
如果正常放下起落架失效,起落架能应急放下.
D.
如果正常飞行操纵机构失效,起落架能收上或放下.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】I'll try _____ the same mistake again. [ ]
A.
to not make
B.
not to make
C.
not making
D.
not make
【单选题】—Nina, don't ______ speaking in public. You are not a small girl. —I know. I'll try my best to be brave. [ ]
A.
be terrified to
B.
be afraid of
C.
be afraid to
D.
be terrified in
【简答题】I'll try not to _____ too much of your time.
【单选题】—Have you got the information _____ you need to use for the report? —Not yet. But I'll try to find some on the Internet at once. [ ]
A.
which
B.
who
C.
what
D.
whose
【单选题】—I'll try to finish the task ahead of time. —I have to remind you that the work is not ________ easy ________ you imagine.
A.
so；as
B.
too；as
C.
as；like
D.
the same；as
【简答题】已知数列 的通项公式是 ,那么 108 是这个数列的第 项。
【单选题】As I felt very unhappy while doing an engineering internship at a top tech company, I think I'll try not to get stuck in corporate life.
A.
confused
B.
impressed
C.
miserable
D.
surprised
【单选题】-I think you can ___ money by yourself to buy a birthday present for your mother. - OK. I'll try. I'll not let a penny waste.
A.
spend
B.
save
C.
cost
D.
leave
相关题目：