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【单选题】
选择造成以下发育性疾病相关的时间, 2∣ 2 釉质发育不全A.
出生后 1 年以内
B.
出生后第 2 年
C.
出生后 2-3 年
D.
六七岁之前
E.
妊娠 4 个月的母亲及 7 、 8 岁以下的儿童
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举一反三
【单选题】To stop the burning process, which method is wrong?
A.
Water for smoldering clothing
B.
Running for help
C.
Remove burning clothes as soon as possible
D.
Remove the rings, belt, jewelry, watches
【简答题】The heat that is produced by burning garbage can be used to ．
【单选题】Once a class does not need to move at a _____ pace, students can learn different things rather than all learning the same thing.
A.
frequent
B.
hasty
C.
uniform
D.
settled
【简答题】The fireman rushed into the burning home, (mind) ______ of the er.
【判断题】In the brainstorming session, students can list all the ideas related to the topic on a piece of paper or on the blackboard. Some ideas may be useful, while others may not. But this does not matter at...
A.
正确
B.
错误
【简答题】轴应具有良好的结构工艺性,需磨制的轴段应设 ,需车制螺纹的轴段应设 。
【判断题】In the brainstorming session, students can list all the ideas related to the topic on a piece of paper or on the blackboard. Some ideas may be useful, while others may not. But this does not matter at...
A.
正确
B.
错误
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