根据我国《海上交通安全法》,当主管机关认为某船对港口安全具有威胁时,有权()。
A.令其停航
B.禁止其进港
C.令其离港
D.B或C
参考答案:D
This study shows that ______language may differ,the order in which young kids learn the parts of speech appears to be the same across different languages.
A.since
B.so
C.while
D.but
用于治疗伤寒的β-内酰胺类药物
A.青霉素
B.羧苄西林
C.双氯西林
D.普鲁卡因青霉素C
E.氨苄西林