问题
多项选择题
依据《中华人民共和国特种设备安全法》，特种设备的使用应当具有规定的（）。
A.防护栏杆
B.安全防护措施
C.安全距离
D.有效距离
答案
参考答案：B, C
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依据《中华人民共和国特种设备安全法》，特种设备的使用应当具有规定的（）。
A.防护栏杆
B.安全防护措施
C.安全距离
D.有效距离
参考答案：B, C
| 用方框内所给词的填空。 | |
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| Mother's Day is celebrated in the U.S.A. It's also a 1 in some other countries. It is on the second 2 in May. It's a day to thank mother. 3 that day, people 4 love to their mothers by giving flowers and cards. On the cards, children will write "Thank mother", "To the best mother in the world", "Best 5 for Mother's Day" and so on. 1._______ 2._______ 3._______ 4._______ 5._______ |