滚装客船的汽车仓往往采用纵骨架式结构，汽车仓内往往没有或缺少横仓壁和一般客船比其横向强度较弱。
参考答案：对
膈肌食管裂孔位于第几胸椎水平（）
A.第8胸椎
B.第9胸椎
C.第10胸椎
D.第11胸椎
E.第12胸椎
句型转换（每空一词）。
1. We are going hiking this Sunday. (对画线部分提问)
are you this Sunday?
2. I often take walks after supper. (改为同义句)
I often walk after supper.
3. The weather in Nanjing is very hot. (对画线部分提问)
the weather like in Nanjing?
4. They are going to the Great Wall. (对画线部分提问)
are they ?
5. They walked two hours in the field. (对画线部分提问)
did they walk in the field?
