问题
多项选择题
薄煤层开采的有利因素有（）。
A、一般不存在冲击地压威胁
B、煤层自然发火倾向小
C、瓦斯等涌出量较低
D、产量较高
E、周期来压表现不强烈
答案
参考答案：A, B, C, E
搜题请搜索小程序“爱下问搜题”
薄煤层开采的有利因素有（）。
A、一般不存在冲击地压威胁
B、煤层自然发火倾向小
C、瓦斯等涌出量较低
D、产量较高
E、周期来压表现不强烈
参考答案：A, B, C, E
| 完形填空。 | ||||
| The tourism has become a very big 1 . Millions of people now 2 their holidays in other countries. The travel companies say that spending holidays in 3 places can help people to understand each other better. This can help towards peace (和平) and love among the 4 . These ideas may bring good business, 5 they aren't true to life. Very 6 of today's tourists want to know the people of the countries they are _7 . They just want a week or two of sunshine to lie on the 8 ___ by the sea. Most tourists do not want to discover things for 9 . They 10 want to travel and stay with their own families or friends for the whole holidays. The tourist business is really very easy for the travel companies. | ||||
|