容器焊接接头的无损检测方法中，主要用于内部缺陷的检测，适用于工艺金属结构对接焊接接头、T形焊接接头、角焊缝以及堆焊层等的检测方法是()。
A. 磁场检测
B. 射线检测
C. 超声检测
D. 渗透检测
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不适用于距离较远的两轴之间传动的传动方式是()。
A. 齿轮传动
B. 链传动
C. 带传动
D. 轮系
《工业金属管道工程施工及验收规范》规定，管道安全阀应按设计文件规定的开启压力进行试调。调压时压力应稳定，每个安全阀启闭试验不得少于()次。
A. 4
B. 3
C. 2
D. 1
What is Edgar Allen Poe by profession according to the passage？
A. He is a cosmologist.
B. He is a cosmogonist.
C. He is a university instructor.
D. He is a famous poet.
Which of the following is the main idea of this passage？
A. The crew life at the ISS should be made more enjoyable.
B. More crew members at the ISS mean more disasters.
C. The Soyuz capsules can only expire to the year 2006.
D. The ISS is in need of more crew members.
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