皮皮学，免费搜题
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搜题
【判断题】
主磁极的作用是产生主磁场A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】与牙髓炎相比,根尖周炎有其自身特点,说法错误的是:( )
A.
根尖区血运丰富
B.
急性期可以明确定位患牙
C.
炎症时组织的修复能力强
D.
可出现淋巴结肿大
E.
可以形成脓性病变
【单选题】The lecture __ when I arrived, So I found it hard to follow.
A.
started
B.
was starting
C.
would start
D.
had started
【简答题】试分别说明能量信号和功率信号的特性。
【单选题】I found the lecture hard to follow because it when I arrived.
A.
was started
B.
has started
C.
started
D.
had started
【单选题】After a long summer holiday in the country, I found it hard to ______ myself to the busy city life.
A.
adjust
B.
change
C.
adopt
D.
settle
【简答题】I found the temptation to miss the class too hard to .
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