“形天与帝争神，帝断其首”中的“形”与“（）”构成通假关系。
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（）俗称黄油。
A. 钙基润滑脂
B. 钠基润滑脂
C. 锂基润滑脂
D. 钙锂基润滑脂
对于已停用的空白重要凭证、有价单证及业务公章柜员可以私自保管。
A. 正确
B. 错误
You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
A. stop your engines
B. sound two prolonged blasts of the whistle
C. sound the danger signal
D. slow to bare steerageway
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