问题
单项选择题
按照《岩土工程勘察规范》(GB50021-2001)对岩溶地区的工程地质详细勘察时，若预定深度内有洞体存在，且可能影响地基稳定，则应钻入洞底基岩面下不少于( )。
A．1m
B．2m
C．3m
D．4m
答案
参考答案：B
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按照《岩土工程勘察规范》(GB50021-2001)对岩溶地区的工程地质详细勘察时，若预定深度内有洞体存在，且可能影响地基稳定，则应钻入洞底基岩面下不少于( )。
A．1m
B．2m
C．3m
D．4m
参考答案：B
| 根据表格所提供的信息，选择正确的答案。 | |
| Tina was twelve years old. She had a fever and went to see a doctor one day. The doctor gave her some medicine. There are some instructions (说明):
| |
| 1. Tina should take _____________ in a day. | |
[ ] | |
| A. 2 teaspoonfuls B. 1 teaspoonfuls C. 3 teaspoonfuls D. 1 / 2 teaspoonfuls | |
| 2. The medicine should be kept in _____________. | |
[ ] | |
| A. the sun B. a fridge C. hot water D. any place | |
| 3. Tina should _____________ before she takes this medicine. | |
[ ] | |
| A. taste the medicine B. see a doctor C. shake the medicine well D. drink some water | |
| 4. People aged below _____________ can't take the fever medicine. | |
[ ] | |
| A. 9 B. 10 C. 6 D. 5 | |
| 5. Tina and her family should _____________ the medicine after October 31st, 2010. | |
[ ] | |
| A. still keep B. take two times C. take three times D. throw away |