锅炉的升温速度应保持在蒸汽温升每小时不大于（）。
A、60℃
B、100℃
C、120℃
D、160℃
参考答案：A
地面点位若用地理坐标表示，应为经度、纬度和绝对高程。
Berlitz established the first Berlitz school in the U. S. in 1878 and used a method which is known as ______ which was one school of Direct Method.
A．Berlitz Method
B．the S Method
C．Oral Method
D．Concrete Method
