受热面补焊或汽包检修后都要进行水压试验至工作压力无泄漏。
参考答案：对
—There’s ______ ball on the ground. Would you please pass ______ ball to me?
—With pleasure.
A．the; the
B．the; a
C．a; a
D．a; the
—What does Merry look like?
—_____.[ ]
A. She looked like her mother
B. She is outgoing
C. She had brown hair and black eyes
D. She looks like a movie star
