高强度螺栓连接钢结构时,其紧固次序应为()。A.从中间开始,对称向两边进行 B.从两

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问题:

高强度螺栓连接钢结构时,其紧固次序应为()。

A.从中间开始,对称向两边进行

B.从两边开始,对称向中间进行

C.从一边开始,依次向另一边进行

D.根据施工方便情况而定

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小题3:Who do you think will be the first Chinese ______________(walk)on the moon?

小题4:The ______________(salesman)addresses and telephone numbers are recorded in yellow pages.

小题5:Of all, Chen Xin did the experiment _____________(success). She is the perfect helper that we need.

小题6:—Does the white kite belong to ______________(she)—No, that’s ours. Her kite was made in blue.

小题7:I don’t think Kate saw me. She ______________(quarrel)with her classmates then.

小题8:A better transport system can make our city ______________(crowd)than before.

小题9:______________(fix)the mess in his computer, he searched the internet for further information.

小题10:—Why didn’t Tom go to the cinema yesterday?   —He ______________(see)the film twice.

小题11:Our headmaster insisted that all students should ______________(dress)neatly and properly.

小题12:Soon they found they had no choice but _____________(sit)there waiting.

小题13:The Centre is open ______________(day)8.30 a.m. -4.30p.m..

小题14:As result of the ______________(lose)of too much blood, the old man passed away at last.

小题15:Follow me, guys! Close your eyes, open your arm and ______________ (breath)deeply.

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对光谱分析用的块状标准物质的要求有哪些?

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C.九卿会审

D.秋审

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人禽流感患者发病初期尚未产生抗体,用于确诊的方法是()

A.微量中和试验

B.蛋白免疫印迹

C.病毒核酸检测

D.胶体金免疫层析分析

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