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【单选题】
车细长轴时出现腰鼓形误差,往往是因为A.
夹具刚度不足
B.
刀具刚度不足
C.
调整误差
D.
工件刚度不足
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【单选题】He would have given you more help， if he ________ so busy.
A.
have not been
B.
had not been
C.
not have been
D.
not had been
【单选题】He ______ told you that because you have known the truth.
A.
needs not have
B.
need not have
C.
need not has
D.
does not need have
【简答题】Servlet中使用Session对象的步骤为:调用 方法 得到Session对象,查看Session对象,在会话中保存数据。
【简答题】Servlet 中使用 Session 对象的步骤为:调用___ 得到 Session 对象,查看 Session 对象,在会话中保存数据。
【单选题】Maybe you have heard of many stories, but here are some real stories_____.
A.
such as
B.
for example
C.
for instance
D.
as follows
【单选题】.—David has made great progress recently. —_____, and _____. A.So he has, so you have B.So he has, so have you C.So has he, so have you
A.
So he has, so you have
B.
So he has, so have you
C.
So has he, so have you
【简答题】东西越小,地心引力对它的吸力就越小,重量也就越轻。
【单选题】如果想在Servlet中使用Session,创建Servlet时,必须继承下列哪个类?( )
A.
javax.servlet.Servlet
B.
javax.servlet.GenericServlet
C.
javax.servlet.http.HttpServlet
D.
javax.servlet.ServletContext
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