单项选择题

患儿苏某，男，8岁，上前牙外伤折断l小时。局部检查冠斜折，切角缺损，牙髓暴露，触痛明显，松(-)。
哪项检查对确定患牙治疗方案最有帮助

A.牙髓活力电测定
B．根尖X线片
C．全口曲面断层片
D．咬合关系检查
E．冷热测

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热门试题

单项选择题

有以下结构体说明和变量定义，如图所示，指针p、q、r分别指向一个链表中的三个连续结点。 struct node { int data； struct node*next； }*p，*q，*r；现要将q和r所指结点的先后位置交换，同时要保持链表的连续，以下错误的程序段是 ______。A．q-＞next=r-＞next；r-＞next=q；p-＞next=r；B．q-＞next=r-＞next；p-＞next=r；r-＞next=q；C．p-＞next=r；q-＞next=r-＞next；r-＞next=q；D．r-＞next=q；q-＞next=r-＞next；p-＞next=r；

A.shangxueba.cn/images/ct_ctcbj_ctcbchoose_00024(20096).jpg'
B.q-＞next=r-＞next；r-＞next=q；p-＞next=r；
B．q-＞next=r-＞next；p-＞next=r；r-＞next=q；
C．p-＞next=r；q-＞next=r-＞next；r-＞next=q；
D．r-＞next=q；q-＞next=r-＞next；p-＞next=r；

单项选择题

New Product Will Save livesDrinking water that looks clean may still contain bugs (虫子), which can cause illness. A small company called Genera Technologies has produced a testing method in three stages, which shows whether water is safe. The new test shows if water needs chemicals added to it to destroy anything harmful. It was invented by scientist Dr Adrian Patton, who started Genera five years ago. He and his employees have developed the test together with a British water company.Andy Headland. Genera's marketing director, recently presented the test at a conference in the USA and forecast good American sales for it. Genera has already sold 11 of its tests at $42,500 a time in the UK and has a further four on order. It expects to sell another 25 tests before the end of March. The company says it is the only test in the UK to be approved by the government.Genera was formed five years ago and until October last year had only five employees; it now employs 14. Mr Headland believes that the company should make around $19 million by the end of the year in the UK alone.Genera Technologies has developed a method that determines whether water is clean.A．RightB．WrongC．Not mentioned

A.
Andy
B.
Genera
C.
Genera
D.
A．Right
B．Wrong
C．Not

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