图示结构EI=常数,用力矩分配法计算时,分配系数μA4为:()
A.4/11
B.1/2
C.1/3
D.4/9
参考答案:D
18. He urged us to _____ this splendid opportunity to develop our movie industry.
A.escape
B.grasp
C.ensure
D.Master
治疗霍乱首选为()
A.抗菌药物
B.禁食
C.血管活性药
D.补液
E.抗毒素治疗