<samp id="swuuk"><listing id="swuuk"><var id="swuuk"></var></listing></samp>

<td id="swuuk"><listing id="swuuk"><var id="swuuk"></var></listing></td>

<samp id="swuuk"><listing id="swuuk"><dl id="swuuk"></dl></listing></samp><video id="swuuk"><sup id="swuuk"></sup></video>

單項(xiàng)選擇題

For ships equipped with an SES, it is（）and（）for the operator to send a distress alert.

A.easy/reliable
B.difficult/cheap
C.stable/compulsory
D.easy/expensive

你可能感興趣的試題

單項(xiàng)選擇題

In the COSPAS-SARSAT system distress signals are processed by（）and the resulting data are forwarded to（）through（）communication network.

A.MCC/LUT/RCC
B.LUT/MCC/RCC
C.LUT/RCC/MCC
D.LUT/RCC/LUT

單項(xiàng)選擇題

The COSPAS-SARSAT system can provide distress alerts to the appropriate rescue authorities（）.

A.at sea
B.on land
C.in the air
D.throughout the world