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【单选题】
二氧化锆式氧传感器锆管内表面电极与()相通,外表面则与()接触。A.
大气;废气
B.
废气;大气
C.
废气;混合
D.
混合气;废气
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反馈参考答案：
举一反三
【单选题】—Excuse me, which is the way the hospital? —Walk the street. Take the first turning on the right and walk on. You'll see it the end of the road. [ ]
A.
for; down; by
B.
of; down; at
C.
to; along; at
D.
to; along; by
【单选题】―Excuse me. Which is the way to the museum? ―Sorry, I don’t know. This is my _____ time here.
A.
first
B.
second
C.
two
D.
one
【单选题】— Excuse me, which is the way to the post office? — Sorry, I don't know. You can ask the policeman over there. — ______ [ ]
A.
How lucky!
B.
It's a pity.
C.
Thank you all the same.
【单选题】--Excuse me, but could you tell me which is the way to the Science Museum? -- .
A.
Enjoy yourself
B.
Let me have a look
C.
Sorry, I’m new here.
D.
Never mind
【单选题】---Excuse me, which is the way to the museum? ---Sorry, I don’t know. This is my time here.
A.
one
B.
two
C.
second
D.
first
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