【单选题】194 表面粗糙度评定参数中,轮廓最大高度代号用( ) ( A ) Ry ( B ) Rz ( C ) Rl ( D ) Ra
【单选题】在表面粗糙的评定参数中,代号Ra指的是( )。
D.
轮廓算数平均偏差、微观不平十点高度、轮廓最大高度都不正确
【单选题】下列关于酶的作用特点的叙述错误的是()
A.
酶的作用只能加速反应达到平衡点,而不能改变平衡点
【单选题】A bond is currently priced at 89.187 per 100 par value. If yields increase by 10bp, the value of bond falls to 88.215. However, if yields decrease by the same amount the value of the bond rises to 90....
【单选题】对于以下代码的执行结果描述正确的是( )。 public interface Guard{ void doYourJob(); } public abstract class Dog implements Guard{ }
A.
无法编译,因为接口中的方法必须定义为abstract
C.
无法编译,因为Dog类必须使用extends而不是impelments.
【单选题】Travis recently purchased a callable bond. However, that bond cannot be currently redeemed by the issuer. Thus, the bond must currently be:
A.
subject to a sinking fund provision.
【单选题】The bonds issued by Manson & Son bear a 6% coupon, payable semiannually. The bond matures in 8 years and has a $1,000 face value. Currently, the bond sells at par. What is the yield to maturity?
【单选题】表面粗糙度评定参数中,轮廓最大高度代号用( )表示。
【单选题】关于字符串S1='Happy Python',以下代码执行后正确的结果是:
A.
sS1=S1.split(),则sS1为'Python Happy'
B.
S1.reverse(),则S1为'nohtyP yppaH'
C.
rS1=S1[::-1],则rS1为'nohtyP yppaH'
D.
kS1=S1.split()[::-1],则kS1为'Python Happy’