有如下的对类“X”的说明,其中 ______ 是错误的。 class X {
A. int a=10;
B. X(); public:
C. X(int val);
D. ~ X(); }
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在中外合资经营企业的注册资本中,外国经营者的投资比例一般不低于()。
A. 0.15
B. 0.2
C. 0.25
D. 0.3
It is implied in the first paragraph that
A. there should be no difference in methodology between physical and social sciences.
B. social sciences lag far behind physical science in terms of methodology.
C. social sciences have achieved little due to limited data.
D. the Internet can never advance scientific research unless it is properly used.
当融券者卖空股票后,如果担心股票价格继续上涨,可以通过卖出股票指数期货和约的方法进行风险对冲。()
A. 正确
B. 错误
应首选何种辅助检查()
A. 血常规
B. 侧脑室穿刺
C. 头颅CT
D. 头颅B超
E. 硬脑膜穿刺