问题
单项选择题
For ships equipped with an SES, it is()and()for the operator to send a distress alert.
A.easy/reliable
B.difficult/cheap
C.stable/compulsory
D.easy/expensive
答案
参考答案:A
For ships equipped with an SES, it is()and()for the operator to send a distress alert.
A.easy/reliable
B.difficult/cheap
C.stable/compulsory
D.easy/expensive
参考答案:A
根据各洲人口状况和下表资料,正确的结论是
地区 | 亚洲 | 非洲 | 欧洲 | 北美 | 拉丁美洲 | 大洋洲 |
人口自然增长率 | 1. 9% | 2. 8% | 0. 3% | 0. 7% | 2. 2% | 1. 2% |
B. 欧洲的新增人口最少
C. 世界新增人口至少50%分布在亚洲
D. 拉丁美洲的新增人口至少是北美的3倍