题目内容

The complying vessels can transmit ship-to-shore distress alerts by at least（）.

A. one means, whether satellite or terrestrial techniques
B. two means, whether satellite or terrestrial techniques
C. two separate and independent means, each using different radio communication services
D. two means, such as MF DSC and HF DSC

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The complying vessels can transmit ship-to-shore distress alerts by at least（）.

A. one means, whether satellite or terrestrial techniques B. two means, whether satellite or terrestrial techniques C. two separate and independent means, each using different radio communication services D. two means, such as MF DSC and HF DSC

发电机变为电动机运行时，发电机的功率因数表指示为迟相。

生产、销售、进口的无线电设备应按比例抽检，其中25W以上功率的发射机全部检测。

治疗尖锐湿疣采用抗病毒药物；体表赘生物应用冷冻、激光、电灼或手术治疗。（）

You deploy Windows 7 and several custom Internet Explorer add-ons to 1，000 client computers. Internet Explorer closes when users run a specific Web application. You need to find out whether an add-on is the cause of the problem. What should you do？（）

A. one means, whether satellite or terrestrial techniques
B. two means, whether satellite or terrestrial techniques
C. two separate and independent means, each using different radio communication services
D. two means, such as MF DSC and HF DSC