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【多选题】
常见的电气联锁包括( )等。A.
串联联锁
B.
机械联锁
C.
自持联锁
D.
联锁
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Producers and exporters know that foreign markets will______to them.
A.
remain opening
B.
remain opened
C.
remain open
D.
remain openness
【单选题】18 Countries sometimes fear that foreign producers are pricing their exports artificially low. This fear is most likely based on the assumption that ________.
A.
foreign companies will lack the earnings to repay their foreign debt
B.
insufficient earnings will be available to improve product technology
C.
foreign producers will charge exorbitant prices after putting competitors out of business
D.
developing countries will be unable to maintain critical industries needed in times of war
【简答题】语文课程标准要求以 为主体,以 为主导。
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