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【单选题】
由于现代轨道式起重机常常是有数台在同一跨区内同时工作，或者上下层轨道同时工作，为防止碰撞事故，起重机上安装防碰撞装置，防碰撞装置有（）和（）。A.
雷达式防碰撞装置；超声波式防碰撞装置
B.
电磁波式防碰撞装置；红外线防碰撞装置
C.
超声波式防碰撞装置；电磁波式防碰撞装置
D.
雷达式防碰撞装置；电磁波式防碰撞装置
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【单选题】What is a reason WHY fresh cookies would be great for astronauts to eat?
A.
Astronauts need more food choices for long trips.
B.
Astronauts want to make a space refrigerator next.
C.
Astronauts would be surprised by the cookies.
D.
Astronauts like cooking with raw ingredients.
【简答题】What is the use of cookies on the website www. riterate.ca? They are used to make the website more ______.
【单选题】— What do you like to do _______ class? — I like to play volleyball.
A.
after
B.
past
C.
from
D.
to
【单选题】What does the woman mean?
A.
Her cookies taste the same.
B.
Her cookies are better than his mother's.
C.
His mother's cookies used to be good.
【单选题】What happened when the oven door popped open?
A.
The cookies were ready to eat.
B.
The cookies were good and the children loved them.
C.
The cookie dough went all over everywhere.
【单选题】What is true about SYN cookies？（）
A.
All TCPoptions are supported， such as largewindows.
B.
The server can have more than8 unique MSS values.
C.
SYN cookies are not implemented as a method of defending against SYN floods.
D.
SYN cookies are implemented as a method of defending against SYN floods.
【单选题】What were the nine children doing while Carolyn was baking cookies?
A.
They were sleeping.
B.
They were running around.
C.
They were coloring pictures.
【单选题】What happened because of the smell of cookies up in space?
A.
The astronauts said they were delicious.
B.
The astronauts baked extra cookies.
C.
The astronauts were reminded of home.
D.
The astronauts went to the moon.
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