问题
多项选择题
小型飞机机翼防冰一般采用：（）.
A.气热防冰
B.电热防冰
C.化学防冰
D.机械除冰
答案
参考答案：A, C, D
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小型飞机机翼防冰一般采用：（）.
A.气热防冰
B.电热防冰
C.化学防冰
D.机械除冰
参考答案：A, C, D
| 根据对话内容选项恰当的句子，有两项为多余的。 | |
B: Sorry, I don't have one. A: So I must go to the shop near our school. B: I think the shop is closed at this time of day. A: 2_____. B: It's Friday. On Friday the shop closes early. A: 3_____? B: Look, it says "closed". A: Oh, dear! you're right. It is closed. 4_____? B: 5_____. It's open 24 hours. A: OK, Let's go. |