钢筋混凝土构件中钢筋起抗拉作用。
参考答案:错
—Yueyang Sports Center will be built this year .
— news it is .
A. How exciting B. What an exciting C. What exciting
性热有大毒,功能蚀疮去腐的药物是()
A.升药
B.轻粉
C.砒石
D.铅丹