压缩气体和液化气体危险货物的专用包装，其最显著的特点是能承受一定程度的内压力，所以称为（）。
A.瓷瓶包装
B.压力容器包装
C.玻璃瓶包装
参考答案：B
一般文献类型标识及取自规定信息源之外的著录信息均置于______内。
Could I do some explanations? I ________ to call on you yesterday, but someone came to see me just
when I was about to leave.[ ]
A. had intended
B. intended
C. would intend
D. was intending
