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【单选题】
手弧焊时,焊接电源的种类应根据( )进行选择。A.
焊条直径
B.
焊件厚度
C.
焊条药皮
D.
焊件长度
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】He doesn't dare to leave the house ______________ he should be recognized.
A.
in case
B.
if
C.
provided
D.
so that
【单选题】He doesn't dare to ask the teacher, _______ he?
A.
does
B.
doesn't
C.
daren't
D.
dare
【简答题】请列举名词、动词、形容词、区别词、副词的语法特征。
【简答题】He doesn't dare to leave the house _____ he should be recognized. A) in case B) if C) provided D) so that
【单选题】I _____ go there alone, but he _____ go there by himself. [ ]
A.
dare; doesn't dare
B.
dare to; dares not
C.
dare; dare not
D.
dare to; doesn't dare
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