电弧气体的吹力总有利于熔滴金属的过渡。( )_爱下问搜题

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问题判断题

电弧气体的吹力总有利于熔滴金属的过渡。( )

答案

参考答案：对

补全对话，情景问答

给下列的句子选择合适的答语。

( ) 1. Where is your home?
( ) 2. How do we go home?
( ) 3. See you at 5 o'clock.
( ) 4. Which floor?

A. By bus.
B. It's near the park.
C. The second floor.
D. See you then.

选择题

单项选择。

This is ______ "s" and that's______ "u". [ ]

A. a, a

B. a, an

C. an, a

D. an, an