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【多选题】
前三点式起落架的缺点是 )
A.
前起落架承受的载荷大
B.
起飞滑跑时机身仰起,飞 行员视界不好
C.
速度较大时着陆容易跳起造成低空失速
D.
前轮会产生摆振现象
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【多选题】与分类和鉴别细菌有关的合成代谢产物有
A.
热原质
B.
细菌素
C.
抗生素
D.
色素
E.
维生素
【单选题】精装书有 3种形式:全纸面精装、纸面布面精装、______。( )
A.
全料精装
B.
全面料精装
C.
全织物精装
D.
全布面精装
【简答题】与鉴别细菌有关的代谢产物有( )和( )。
【单选题】Twenty miles ______ a long way to cover.
A.
have been
B.
is
C.
are
D.
were
【单选题】— What does the newspaper say? — It's reported that a new airport _____ twenty miles from the city now. [     ]
A.
is being constructed
B.
is constructing
C.
has constructed
D.
was being constructed
【单选题】I don’t know if that’s true, but I’m going to ______ anyway.
A.
tell
B.
try
C.
tree
D.
treat
【单选题】与鉴别细菌有关的合成代谢产物是
A.
毒素
B.
色素
C.
维生素
D.
抗生素
E.
热原质
【单选题】细菌合成代谢产物中与细菌鉴别有关的是
A.
内毒素
B.
热原质
C.
抗生素
D.
维生素
E.
色素
【多选题】与鉴别有关的细菌合成代谢产物有
A.
色素
B.
维生素
C.
抗生素
D.
细菌素
【单选题】听力原文:W: I can give you a ride-I'm going home this weekend anyway. M: Thanks. But let me give you some money for gas. Q: What does the man want to do? (18)
A.
Give the woman a ride home.
B.
Borrow the woman's car to get home.
C.
Take a different way home.
D.
Share the expense of the drive home.
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