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【单选题】
钢材的比是( )的比值，反映钢材在结构中使用的安全性。A.
屈服强度/伸长率
B.
屈服强度/抗拉强度
C.
抗拉强度/屈服强度
D.
伸长率/屈服强度
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】---David, turn off the TV_____ no one is watching it. ---But it__________off already! The music is from the radio.
A.
so that; has been turned
B.
whe; has turned
C.
if; has been turned
D.
because; has turned
【单选题】David, turn off the TV no one is watching it.
A.
But it________ off already! The music is from the radio.
B.
so that; has been turned
C.
when; has turned
D.
if; has been turned
E.
because; has turned
【简答题】位于HTML文档的最前面,用于向浏览器说明当前文档使用哪种 HTML 或 XHTML 标准规范的标记是A. B. C. D.
【简答题】护士用紫外线消毒治疗室时，如果防护不当，可导致哪些部位不同程度的损害?
【单选题】What is Annie's biggest problem？
A.
She can't drive round corners.
B.
She can't park the car well.
C.
She can't speak to the examiner.
【简答题】护士用紫外线消毒治疗室时,如果防护不当,可导致不同程度的____、____等不良反应。
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