皮皮学，免费搜题
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搜题
【单选题】
粘接固定桥的固位主要依靠A.
磨擦力
B.
酸蚀、粘结技术
C.
卡环
D.
吸附力
E.
粘结和卡环
拍照语音搜题，微信中搜索"皮皮学"使用
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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 you are having a cold, ___________
A.
it is always the same kind of cold that you had last time
B.
it may be the same kind of cold that you had last time
C.
it is certainly not the same kind of cold that you had last time
D.
it is probably not the same kind of cold that you had last time