It can be inferred from Para 3 that ______.
A.the sightseers cannot visit the Castle and the Palace separately
B.the playgoers spend more money than the sightseers
C.the sightseers do more shopping than the playgoers
D.the playgoers go to no other places in town than the theater
A.载干比
B.场强
C.信噪比
D.噪声
Which of the following questions is not included in "those questions" (Para 5, Line 1) ?
A.How fast do seed strains grow?
B.How much protection does a small dose provide?
C.Are adjuvants needed and prove to be safe?
D.How much will such doses cost?
public Throwable(String messaSe)构造函数包含getMessage()方法,用来返回带参数构造函数创建异常时的参数内容,对无参数构造函数而言,用它返回的是【 】。
public Throwable(String message)构造函数包含getMessage()方法,用来返回带参数构造函数创建异常时的【 】,对无参数构造函数而言,用它返回的是空值。