INMARSAT-C船站通信前必须向船舶所在洋区（）入网申请
A.任一地面站
B.网络谐调站
C.网络协调站指定的岸站
D.操作员选择的岸站
参考答案：B
句型转换。
1. I cleaned my room yesterday. (就划线部分提问)
________ ________ you ________ yesterday?
2. Jim went to the library last night. (改为一般疑问句)
________ Jim ________ to the library last night?
3. She did her homework last night. (改为否定句)
She ________ ________ her homework last night.
某跨国公司专为黑种人研制的化妆品，其最适合在下列哪个国家销售：
A．印度
B．俄罗斯
C．日本
D．沙特阿拉伯
