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【简答题】
—是光信号在光纤中传播的必要条件 。
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皮皮学刷刷变学霸
举一反三
【单选题】特发性血小板减少性紫癜病人经肾上腺皮质激素治疗8个月后,血小板升为30×109/L,仍有月经过多、鼻衄、牙龈出血症状,51Cr标记血小板扫描脾区与肝区的放射指数比值较高,进一步治疗应选用( )
A.
继续使用糖皮质激素治疗
B.
免疫抑制剂
C.
脾切除
D.
输血小板
E.
抗纤溶药物
【判断题】垂直思维比水平思维更有利于创新
A.
正确
B.
错误
【多选题】职业接触限制包括哪些类型( )。
A.
时间加权平均容许浓度
B.
保证职业健康的职业接触限值
C.
短时间接触容许浓度
D.
最高容许浓度
【简答题】As soon as I stepped out of the room, I had found a bus rushing by . A B C D 2. Things are getting better and better when time goes on. A ...
【单选题】I found a story-book on the desk, it isn't mine, it is ______, I think. [     ]
A.
her
B.
she
C.
yours
D.
mine
【判断题】掏槽眼的主要作用是增加爆破的临空面。( )
A.
正确
B.
错误
【单选题】I've always found her books ______. When i start to read, nothing can distract me from the book.
A.
fascinating
B.
mute
C.
significant
D.
contrary
【单选题】I found a story-book on the desk, it isn’t mine, I think it is_____.
A.
her
B.
she
C.
yours
D.
mine
【简答题】答案输入格式为:xxx后加xxx 1. The children are taking active part in the English speech contest. 2. The ice is too thin for us to skate. 3. She married the man because what he had done for her. 4. The recorder ...
【单选题】I've always found her books ______. When I start to read, nothing can distract me from the book.
A.
fascinating
B.
mute
C.
significant
D.
contrary
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