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举一反三
【单选题】When the marine was found, _______________.
A.
he was setting out in an army vehicle with an officer
B.
he was participating in a military exercise
C.
he and his fellow soldiers were stuck in some marshes
D.
he was already with the old man
【单选题】When using the marine radiotelephone，what frequency is not commonly used for transmission of distress signals ().
A.
2182 kHz
B.
156.8 MHz
C.
Channel 16
D.
Channel 66
【单选题】1940年5月,在枣宜会战中,国民党第三十三集团军总司令( )将军在激战中殉国,成为抗战中国民党军中牺牲的最高将领。
A.
张自忠
B.
宋哲元
C.
庞炳勋
D.
马占山
【简答题】原煤外在水份的外在水分测定样品粒度是（）干燥温度是（）；内在水分测定样品粒度是（）干燥温度是（）。
【单选题】What does the professor imply when she says this:
A.
Marine mammals are not harmed by supersonar.
B.
The supersonar has an adverse effect on marine mammals.
C.
The military is deeply concerned about the welfare of dolphins.
D.
Marine mammals think supersonar is another mammal.
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