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搜题
【单选题】
弹簧垫圈开口斜度是()度。A.
40一50
B.
50一60
C.
70一80
D.
80一90
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参考解析：
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皮皮学刷刷变学霸
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【单选题】The corrections are then communicated ________ to the navigators, where they are combined with the satellite signals received by the navigators, thereby improving their navigation or positioning.
A.
later
B.
two minutes earlier
C.
24 hours later
D.
in real-time
【简答题】试述铁路零担运输的优缺点
【单选题】The corrections are then communicated _______ to the navigators, where they are combined with the satelliate signals received by the navigators, thereby improving their navigation or positioning.
A.
later
B.
two minutes earlier
C.
24 hours later
D.
in real-time
【多选题】跨境电商贸易中采用海外仓的模式有哪些特点和优势?
A.
突破物流重量、价格、体积限制
B.
拥有有利的价格和时间优势
C.
增加客户满意度和信任感
D.
有利于营业额提升和增长
【单选题】主存、外存通常由以下哪种类型存储器实现( )。
A.
DRAM 、磁介质存储器
B.
FLASH 、磁介质存储器
C.
DRAM 、 SRAM
D.
SRAM 、 DRAM
【简答题】电力变压器按冷却方式可划分为（ ）等。
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