焊接时,对于剧烈工况和()级管道不能使用开口衬环。
A.、GC1
B.、GC2
C.、GC3
D.、所有
参考答案:C
根据下列情景,选择最佳答案。
1.你想借Jenny 一支铅笔时,你应该说:[ ]
A. May I borrow your pencil, Jenny?
B. I borrow your pencil, Jenny.
C. Do you have a pencil?
2.早上妈妈叫你起床,让你穿上衣服时,她应说:[ ]
A. Wake up! Wear your clothes.
B. Wake up! Put your clothes.
C. Wake up! Put on your clothes.
3.妈妈为你买了件新衬衣,可你穿着太小,你应说:[ ]
A. It's just right.
B. It's too small.
C. It's too big.
4.你想问别人今天星期几时,你应说:[ ]
A. What is it?
B. What day is it?
C. What day it?
5.你想请朋友喝茶时,你应说:[ ]
A. Would you like some tea?
B. I'd like some tea.
C. Do you like tea?
客舱、驾驶舱的温度控制盒的安装位置
A、左电子设备架
B、右电子设备架
C、后电子设备架
D、左、右电子设备架