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【判断题】
灯具电源的相线必须经开关控制A.
正确
B.
错误
手机使用
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反馈参考答案：
举一反三
【简答题】EMB ( Eosin Methylene Blue )培养基常用于检查、鉴别饮用水、牛奶中的( ) 。
【简答题】The students made a _____ (compare) of different cultures.
【简答题】英译汉:eosin
【单选题】Which sentence explains when the students made the sandwiches?
A.
On April 1, students in California helped those in need in their community.
B.
The world record for most sandwiches made in three minutes was 490.
C.
The school's parents club planned the sandwich .
D.
They would be delivered to the Alpha Project later that day.
【简答题】如图，直线AB∥CD，EF分别交AB、CD于点M、G，MN平分∠EMB，GH平分∠MGD，求证：MN∥GH． 证明：∵AB∥CD（已知） ∴∠EMB=∠EGD（ _________ ） ∵MN平分∠EMB，GH平分∠MGD（已知） ∴∠1= ∠EMB，∠2= ∠MGD（ _________ ） ∴∠1=∠2 ∴MN∥GH（ _________ ）
【简答题】The students made a list of their (complain) about school meals.
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