与普通砼相比，高强砼的特点是（）
A.早期强度低，后期强度高
B.徐变引起的应力损失大
C.耐久性好
D.延展性好
参考答案：C
关于鼻咽癌常见首发症状的描述不正确的是：（）
A．鼻出血
B．头痛
C．单侧鼻塞
D．首发症状多属早期症状
E．吸鼻后痰中带血
Which of the following is NOT a form of wage erosion
Which of the following does NOT stand for the argument of deflation
A．Prices soar.B．Debt repayment becomes more difficult.C．Consumers are encouraged to wait for even lower prices.D．The cost of goods falls.
