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【单选题】
GMDSS 的通信资费类型是_____。(130175:第1章 GMDSS系统概述) (A-0,B-0,C-0,D-0,错误-0)A.
国内与国际资费
B.
地面通信与卫星通信资费
C.
电话与电传资费
D.
免费与商业资费
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】Tourists and loggers are two examples of people who_______.
A.
are a threat to the tribe
B.
can help the tribe
C.
should contact the tribe
【简答题】Two examples should (2) be enough to explain the point.
【简答题】Why should students not be blamed for their language deficiency? (Paras. 6) List two examples.
【简答题】电阻焊是工件组合后通过电极施加（），利用电流流过接头的接触面及邻近区域产生的（）进行焊接的方法。
【简答题】Tired of bad handwriting, Richie decided to perfect his penmanship (书法) last January. Though the year progressed, his writing didn’t. “My penmanship just got worse,” he says. “I get tired of trying to...
【简答题】Two examples should be enough to explain the point.
【简答题】生物药物常用的定量分析方法有哪些?
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