小筒时筒子大端密度大于小端。
参考答案:对
— It is said that another new car factory__now.
— Yeah. It __one and a half years.
A.is building; takes
B.is being built; will take
C.is built; will take
D.is being built; takes
卧式容器采取的支座主要有()。
A.耳式支座
B.鞍式支座
C.裙式支座
D.柱式支座