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【單選題】
隱藏在表層后面、內部、下面的結構為不可見結構，一般采用虛線表達這類結構，但在機械加工圖中更多地采用（ ）來表示不可見的結構，同時把虛線變成實線。
A.
主視圖
B.
剖視圖
C.
左視圖
D.
俯視圖
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【單選題】What is the team planning to do?
A.
Figure out why Amelia’s plane crashed.
B.
Find the spot where Amelia’s plane crashed.
C.
Find out why Amelia set out for the island.
【單選題】The reason was _____ he wanted to study Chinese medicine.
A.
that
B.
because
C.
why
D.
which
【單選題】What makes the team want to do more research on the crash?
A.
An old map.
B.
An old photo.
C.
An article.
【單選題】We should think carefully about _____ Mr. Needham said at the meeting.
A.
that
B.
what
C.
which
D.
/
【單選題】Your article is too long. You must ______ to about 3,000 words.
A.
cut it off
B.
cut it up
C.
cut it down
D.
cut it into
相關題目：
【單選題】What is the team planning to do?
A.
Figure out why Amelia’s plane crashed.
B.
Find the spot where Amelia’s plane crashed.
C.
Find out why Amelia set out for the island.
【單選題】The reason was _____ he wanted to study Chinese medicine.
A.
that
B.
because
C.
why
D.
which
【單選題】What makes the team want to do more research on the crash?
A.
An old map.
B.
An old photo.
C.
An article.
【單選題】We should think carefully about _____ Mr. Needham said at the meeting.
A.
that
B.
what
C.
which
D.
/
【單選題】Your article is too long. You must ______ to about 3,000 words.
A.
cut it off
B.
cut it up
C.
cut it down
D.
cut it into
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