由于再热蒸汽对金属的冷却作用小，所以再热器一般布置在（）或（）。
参考答案：水平烟道；尾部竖井中
持有会计从业资格证书的人员，离开会计工作岗位超过()个月的，应当填写注册登记表，并持会计从业资格证书，向原注册登记的会计从业资格管理机构备案。
A.1
B.3
C.6
D.9
The factory has produced ____ computers as they did last year.
A．twice as many
B．twice as much
C．as twice as many
D．as twice much
