下列为Ⅰ级钢的牌号是()
A.HRB335
B.HRB400
C.Q295
D.HPB235
参考答案:D
根据表中提示,判断句子正(√)、误(×)。
( ) 1. Beijing is sunny. It's hot.
( ) 2. Lhasa is windy. It's cold.
( ) 3. Harbin is snowy. It's cold.
( ) 4. Urumqi is cloudy. It's cool.
( ) 5. Hong Kong is rainy. It's cool.
在A4海区航行的船舶,使用()设备接收岸到船遇险报警.
A.带DSC的VHF无线电话
B.带DSC的MF/HF无线电设备
C.INMARSAT卫星船站
D.A+B+C