皮皮学，免费搜题
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【单选题】
与四冲程柴油机相比，二冲程柴油机的特点包括__A.
进排气时间长，换气质量差
B.
进排气时间短，换气质量差
C.
进排气时间长，换气质量好
D.
进排气时间短，换气质量好
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】— is your father? Does he still w ork as an engineer? — Yes, he has been an engineer for thirty years .
A.
Who
B.
How
C.
What
D.
Which
【单选题】-- _____ is your father? Does he still work as an engineer? Yes, he has been an engineer for thirty years.
A.
Who
B.
How
C.
What
【简答题】He has been an ______ (拍卖师) for a long time.
【简答题】蓝牙路由机制中,移动终端MT是固定蓝牙主设备FM的( )。
【简答题】He has been an active_________in the discussion.
【简答题】He has been an ______ (拍卖师)for 13 years.
【单选题】— is your father? Does he still work as an engineer? —Yes, he has been an engineer for thirty years.
A.
Who
B.
Which
C.
What
D.
Whose