柴油機(jī)是熱機(jī)的一種,它是:
A、在氣缸內(nèi)部只進(jìn)行一次能量轉(zhuǎn)換的發(fā)動(dòng)機(jī)C
暫無(wú)解析
已知向量a=(2,3),b=(1,m),且a垂直b,那么實(shí)數(shù)m的值為_____。
—DidyougiveyouriPhone6toMary?
—__________.Ijustlentittoher.
—Ican'trememberthosegrammarrules!
—__________.Practicemore.
—Shallwetakeataxitheresincetimeislimited?
—________.Itshouldbehardtogetoneduringtherushhour.
依據(jù)農(nóng)業(yè)地域性特點(diǎn),我國(guó)應(yīng)在:()