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【单选题】
下列选项中,哪一个类是Object的子类?A.
public final class String{}
B.
public class Person{}
C.
public abstract class Animal{}
D.
以上三个类都是Object子类
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举一反三
【单选题】Of all the speech organs, the is/are the most flexible.
A.
mouth
B.
lips
C.
tongue
D.
vocal cord
【单选题】All the following statements about the male genital organs are true except that:
A.
The testis are two glandular organs
B.
The epididymis consists of the head, body and tail
C.
The ductus deferens traverses the inguinal canal
D.
The ejacculatory duct open into the urinary bladder
E.
The prostate is around the commencement of the urethra
【简答题】566k电阻写出其标称值及偏差
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