[单项选择](Until) the George Washington Bridge (was built), modern suspension bridges were stiffened with steel trusses and beams to (limited) their motion (in traffic) and wind.() A. Until B. was built C. limited D. in traffic
第29题: [单项选择] 以下提供若干组考题,每组考题共同使用在考题前列出的A、B、C、D、E五个备选答案。请从中选择一个与问题关系密切的答案。每个备选答案可能被选择一次、多次或不被选择。
脂蛋白进行琼脂糖凝胶电泳(pH8.6电泳缓冲液)从负极到正极依次是( ) A. VLDL、LDL、CM、HDL B. HDL、VLDL、LDL、CM C. LDL、HDL、VLDL、CM D. CM、VLDL、LDL、HDL E. CM、LDL、VLDL、HDL 参考答案:E