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【单选题】
用于气缸位置检测的传感器是( )。A.
光电传感器
B.
电感传感器
C.
磁性开关
D.
光纤传感器
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【简答题】第五課宿題.doc
【单选题】Choose the best topic sentence for each group of supporting sentences. 1.)___________________________________________________. North Americans send cards for many occasions. They send cards to family ...
A.
Sending cards is very popular in North America.
B.
Birthday cards are the most popular kind of card.
C.
It is important to send thank-you cards.
【单选题】___________________. North Americans send cards for many occasions. They send cards to family and friends on birthdays and holidays. They also send thank-you cards, get well cards, graduation cards, a...
A.
Sending cards is very popular in North America.
B.
Birthday cards are the most popular kind of card.
C.
It is important to send thank-you cards
【简答题】第六課宿題.doc
【简答题】第三課宿題.doc
【简答题】171第一課宿題.doc
【单选题】A：Can I buy two or three cards fro meachset？ B：Oh，sorry，Wesellitby（）.
A.
singly
B.
apiece
C.
set
D.
sets
【简答题】第九課宿題172.doc
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