水平桌面上放有两块重叠在一起的长方木板，质量分别为m1和m2，如图所示．设两个接触面的滑动摩擦系数都是μ，而

The requirements of the ISM Code may be applied to

A.only oil tankers

B.only passenger ships

C.only containers

D.all kinds of ships

According to the author, ______.

A．the investigation of the life cycle of a protozoon is undoubtedly pure research

B．pure scientists tend to look down upon applied investigation

C．the discover of X-rays was made in applied research

D．the classification of research into "pure" and "applied" is neither accurate nor impersonal

If wire rope clips are used to make a joint in a wire lashing，be sure that ______．

A.the saddle portion of the clip should be applied to the live load segment and the U-bolt to the dead or shortened end segment

B.the saddle portion and the U-bolt of the clip should be applied to the dead or shortened end

C.neither the saddle portion nor the U-bolt of the clip should be applied to the live load segment

D.the U-bolt of the clip should be applied to the live load segment and the saddle portion to the dead or shortened end segment

If wire rope clips are used to make a joint in a wire lashing，be sure that ______．

A.the saddle portion of the clip should be applied to the live load segment and the U-bolt to the dead or shortened end segment

B.the saddle portion and the U-bolt of the clip should be applied to the dead or shortened end

C.neither the saddle portion nor the U-bolt of the clip should be applied to the live load segment

D.the U-bolt of the clip should be applied to the live load segment and the saddle portion to the dead or shortened end segment

(22)

A．Susan and Ben were accepted at the state university.

B．Ben applied to the state university because Susan was accepted there.

C．Ben did not want to go to the state university because Susan is there.

D．Neither Susan nor Ben is interested in attending the state university.

According to the author,

A．the investigation of the life cycle of a protozoon is pure research.

B．applied investigation is looked down upon in modern society.

C．the discovery of X-rays was made in applied research.

D．the common classification of research is neither accurate nor impersonal.

If you want to be left alone on an elevator, the best thing to do is______.

A．to look into another passenger's eyes

B．to avoid eye contact with other passengers

C．to signal you are nor a threat to anyone

D．to keep a distance from other passengers

A.I only

B.II only

C.both I and II

D.neither I nor II

A．regularly

B．ordinarily

C．traditionally

D．generally

A．regularly

B．ordinarily

C．traditionally

D．generally