皮皮学，免费搜题
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【判断题】
在使用含有氟化物的钎剂时，必须在有通风的条件下进行焊接，或者使用个人防护装备( )。A.
正确
B.
错误
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】When Edison died, it was proposed that the American people all power in their homes, streets, and factories for several minutes in honour of this great man.
A.
turn off
B.
turned off
C.
would turn off
D.
had turned off
【单选题】如果字段“成绩”的取值范围为0-100,则错误的验证规则是()
A.
>=0 and <=100< /div>
B.
[成绩]>=0 and [成绩]<=100< /div>
【单选题】如果字段“成绩”的取值范围为0-100,则正确的验证规则是()
A.
0-100
B.
[成绩]>=0 且 [成绩]<=100< /div>
【单选题】When Edison died, it was proposed that the American people ( ) all power in their homes, streets, and factories for several minutes in honor of this great man.
A.
turn off
B.
turned off
C.
would turn off
D.
had turned off
相关题目：
【单选题】如果字段“成绩”的取值范围为0-100,则错误的验证规则是()
A.
>=0 and <=100< /div>
B.
[成绩]>=0 and [成绩]<=100< /div>
【单选题】如果字段“成绩”的取值范围为0-100,则正确的验证规则是()