题目内容

亚硝酸盐中毒时,亚硝酸盐能使低铁血红蛋白转变为高铁血红蛋白而引起缺氧。( )

A. 对
B. 错

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与传统工艺相比,现代凝固成形技术涉及面更广,极大地丰富了凝固科学与技术的内涵。

A. 对
B. 错

Fill in the blank with the expressions given below. Change the form where necessary. Each expression can be used only once.1. After 10 years of full-time training, she has finally _____ as a professional dancer.

Fill in the blank with the expressions given below. Change the form where necessary. Each expression can be used only once.2. _____, what is the point in taking part in the competitive event if the result is only to prove how incompetent you are?

Fill in the blank with the expressions given below. Change the form where necessary. Each expression can be used only once.3. Redecorating the house is a challenging task. It's necessary to _____ the wallpaper first.

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