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【单选题】
焊条电弧焊对焊接区域所采用的保护方式是()
A.
气保护
B.
渣保护
C.
气—渣联合保护
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参考答案:
举一反三
【单选题】关于咽峡的叙述,正确的是
A.
是鼻腔通向咽的分界
B.
腭垂、腭帆游离缘、两侧的腭舌弓及舌根共同围成
C.
不包含腭垂
D.
是口咽和喉咽的分界
E.
腭垂、腭帆游离缘、两侧的腭咽弓及舌根共同围成
【单选题】He is____ friend of____  writer’s.
A.
/:the   
B.
a;the   
C.
a;a    D a;/
【简答题】海南日报海口 12月18日讯 (记者 陈蔚林) 12月18日上午10时,庆祝改革开放40周年大会在人民大会堂隆重召开。琼海市潭门镇的党员干部和渔民代表早早地聚在了一起,目不转睛地在电视前收看大会直播。 镜头扫过台,一个熟悉的身影吸引了他们的目光 ——“是老王!你们看,王书茂当选了‘改革先锋’,而且还坐在了台上!”人群沸腾了! “从两天前抵达北京,到今天正式被党中央、国务院授予‘改革先锋’称...
【单选题】Who was Roland Little Wood?
A.
He was the stranger's brother.
B.
He was the writer's next-door neighbour.
C.
He was the stranger's next-door neighbour.
【判断题】(    )一般情况下半闭环控制系统的精度高于开环系统。
A.
正确
B.
错误
【单选题】The writer cites Jascha Heifetz's example mainly because ______.
A.
he is a skillful violinist
B.
he quits the concert stage at his peak
C.
he ends every show gracefully
D.
he is adorned by his audience
【单选题】The writer's real trouble was that
A.
he couldn't speak the language
B.
he followed the policeman's direction
C.
he took the wrong, bus
D.
he left the town-centre
【单选题】关于咽峡的叙述 , 正确的是
A.
是鼻腔通向咽的分界
B.
舌根参与围成
C.
不包含 腭 垂
D.
不包含两侧 腭 舌弓
E.
是口咽和喉咽的分界
【单选题】关于咽峡的叙述,正确的是:
A.
是鼻腔与咽的分界
B.
舌根参与围成
C.
不包含腭垂
D.
会厌上缘参与围成
E.
是口咽与喉咽的分界
【单选题】What was the writer's opinion of the psychologist?
A.
He was inefficient at his job.
B.
He was unhappy with his job.
C.
He was unsympathetic.
D.
He was very aggressive.
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