6根由l0钢筋代换成巾6钢筋应为()。
A、10φ6
B、13φ6
C、17φ6
D、21φ6
参考答案:C
对北京人用火的提法不正确的是:[ ]
A.北京人会使用天然火
B.北京人用火烧烤、御寒、照明等
C.北京人会用火但不会管理火
D.北京人用火驱逐野兽,又增强了体质
— It's said that John will be in a job paying over $60,000 ______ year.
— Right, he will also get paid by ______ week. [ ]
A. a; the
B. the; the
C. the; a
D. a; a