新型的目视检验仪器包括（）
A、光纤内窥镜
B、视频探测镜
C、工业检测用闭路电视
D、以上都是
参考答案：D
Every lifeboat which is fitted with a fixed two-way VHF radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in is operating position.
A.a dummy antenna
B.a supporting facilities
C.a back-up equipment
D.an antenna
一张面值为1000000美元、期限为60天的商业票据，发行价格为990000美元，则其贴现收益率为（）。
A.1％
B.99％
C.6％
D.以上皆不对
