炉缸温度是指炉缸渣铁的温度,一般为1500℃左右。
参考答案:对
——Excuse me, _______?
——That’s $50 altogether, sir.
A.how much should I give you
B.but can I take your order
C.could I have the bill, please
D.would you please take the money
不属于成像技术参数的是()
A.摄影设备
B.标称焦点
C.管电压
D.总滤过
E.体位设计