试述种分分解生产砂状氧化铝主要有哪些控制手段?
参考答案:
较高的分解温度;较低的苛性比值;较短的分解时间;借助氢氧化铝分级手段。分解初温、温;首槽苛性比值;晶种量;分解时间
_____ she _____ a headache? I think she should see a doctor.[ ]
A. Does, have
B. Does, has
C. Does, got
D. Has, have
正常肌张力分类为()
A.1种
B.2种
C.3种
D.4种
E.5种