环氧乙烷气体灭菌生物测试包使用的标准指示菌株为() A.嗜热脂肪杆菌芽胞 B.枯草杆

题型:单项选择题 A1/A2型题

问题:

环氧乙烷气体灭菌生物测试包使用的标准指示菌株为()

A.嗜热脂肪杆菌芽胞

B.枯草杆菌黑色变种芽胞

C.多黏芽孢杆菌

D.环状芽孢杆菌

E.坚强芽孢杆菌

考点:外科护理主管护师主管护师(外科护理)相关专业知识考前冲刺一
题型:单项选择题 A1/A2型题
已知直线l的方程为
x=2-4 t
y=1+3 t
,则直线l的斜率为______.
题型:单项选择题 A1/A2型题

患儿,女,7岁,乳牙龋坏较多,已充填。六龄牙已萌齐,窝沟深,部分窝沟有着色,无明显龋坏,要求预防。

操作过程中下面哪一项不正确

A.用不含氟的清洁剂清洁牙面

B.酸蚀前吹干牙面

C.用沾有液体酸蚀剂的棉球反复擦拭牙面

D.酸蚀后加压冲洗10~15秒

E.在不影响咬合的情况下尽可能涂厚一点

题型:单项选择题 A1/A2型题

化学名为α-环戊基-α-羟基苯乙酸-N-甲基-3-吡咯烷醇酯甲基溴化物的药物是

A.贝那替秦(Benactyzin

B.盐酸苯海索(Trihexyphenidyl HY-drochlorid

C.哌仑西平(Pirenzepin

D.溴丙胺太林(Propantheline Bromid

E.格隆溴铵(Glycopyrronium Bromid

题型:单项选择题 A1/A2型题

阅读理解。

     In a recent announcement, Harvard and the Massachusetts Institute of Technology(MIT)said that they

have joined forces to offer free online courses in an effort to attract millions of online learners worldwide.

    Beginning this fall, a number of courses developed by teachers at both universities will be offered online

through a new $60 million program, known as edX. "Anyone with an Internet connection anywhere in the world can use our online courses," Harvard President Drew Faust said during a meeting to announce the

plan.

    MIT has offered a program called OpenCourseWare for ten years that makes materials from more

than 2,000 classes free online. It has been used by more than 100 million people. In December, the

school announced it also would begin offering a special certificate, known as MITx, for people who

complete certain online courses. Harvard has long offered courses to a wider population through a

similar program.

    The MITx will serve as the foundation for the new learning platform.

    MIT President Susan Hockfield said more than 120,000 people signed up for the first MITx course.

She said Harvard and MIT hope other universities will join them in offering courses on the open-source

edX platform.

     "Fasten your seatbelts," Hockfield said.

     Other universities, including Stanford, Yale and Carnegie-Mellon, have been experimenting with

teaching to a global population online.

     The Harvard-MIT program will be monitored by a not-for-profit (非盈利的) organization based in

Cambridge, to be owned equally by the two universities. Both MIT and Harvard have provided $30

million to start the program. They also plan to use the edX platform to research how students learn and

which teaching methods and tools are most successful.

1. According to this text, edX is _______.

A. a part of the free MIT OpenCourseWare

B. a free computer program by MIT and Harvard

C. a Harvard-MIT platform of free online courses

D. a free program online for universities worldwide

3. What is said about online education in the text?

A. Universities have been trying online courses.

B. About 2,000 online courses have been offered.

C. Over 100 million people have finished courses online.

D. Stanford and Yale together have courses similar to edX.

3. The underlined part in the text probably means "         ".

A. Get ready for the difficulties

B. Get ready for this educational change

C. Get prepared to complete the online courses

D. Get prepared to make materials for the edX courses

4. What can be said about MITx according to the text?

A. It is first offered as part of the edX learning program.

B. It is another free MIT-Harvard online learning program.

C. It is a standard to recognize online learners' achievement.

D. It is a new kind of free online course of Harvard and MIT.

题型:单项选择题 A1/A2型题

为了控制切削热,在保证一定的生产率的前提下,选择切削用量时,尽可能取大的切削深度和切削速度,选取较小的进给量。( )

更多题库