单选题The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel （）within half the range of visibility.A stoppingB being stoppedC to stopD to be stopped

x线平均波长(λmean)与最短波长(λmin)的 关系是

A.λmean =3λmin

B.λmean =2．5λmin

C.λmean =2λmin

D.λmean =l．5λmin

E.λmean=λmin

A. establish starting at the egress router going back to the ingress router

B. establish starting at the ingress router going downstream to the egress router

C. establish when a router learns of a new prefix

D. establish when the path correctly matches the reverse path forwarding check

There are three kinds of goals: short-term, medium-range and long-term goals.Short-term goals are those that usually deal with current activities, which we can apply on a daily basis. Such goals can be achieved in a week or less, or two weeks, or possibly, months. It should be remembered that just as a building is no stronger than its foundation, long-term goals cannot amount to very munch without the achievement of solid short-term goals. Upon completing our short-term goals, we should date the occasion and then add new short-term goals that will build on those that have been completed.

The intermediate goals build on the foundation of the short-term goals. They might deal with just one term of school or the entire school allow yourself to become discouraged or overwhelmed. As you complete each step, you will enforce the belief in your ability to grow and succeed. And as your list of completion dates grow, your motivation and desire will increase.

Long-term goals may be related to our dreams of the future. They might cover five years or more. Life is not a static thing. We should never allow a long-term goal to limit us or our course of action.

11.Our long-term goals mean a lot _______.

A.if we cannot reach solid short-term goals

B.if we complete the short-term goals

C.if we have dreams of the future

D.if we put forward some plans

12.New short-term goals are built upon______.

A.a daily basis

B.your achievement in a week

C.current activities

D.the goals that have been completed

13.When we complete each step of our goals, ________.

A.we will win final success

B.we are overwhelmed

C.we will build up our confidence to achieve success

D.we should have strong desire for setting new goals

14.What is the main idea of this passage? _______

A.Life is a dynamic thing.

B.We should set up long-term goals.

C.Different kinds of goals in life.

D.The limitation of long-term goals.

15.Which of the following statements is wrong according to the passage? _______

A.The long-term goals cannot amount to very much without achieving short-term goals.

B.The intermediate goals build on the foundation of the short-term goals.

C.Life is a static thing, thus never allowing a long-term goal to limit us.

D.We should often add new short-term goals to what have been completed.

In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as ________ ．

A.Moderate gale

B.Near gale

C.Strong gale

D.Whole gale

X线平均波长(λmean)与最短波长(λmin)的关系是

A．λmean=3λmin

B．λmean=2.5λmin

C．λmean=2λmin

D．λmean=1.5λmin

E．λmean=λmin

The main function of a processor is to(68)and carry out instructions which usually consist of operation and(69). The term to measure the speed of the processor is called a Megahertz(MHz), which means million(70)per second.

A．translate

B．interpret

C．describe

D．store

A. management of the library files

B. management of the encryption keys and archives

C. helps to reduce tape, file management and archive costs

D. helps to control the write speed matching on LTO-4 drives

X线平均波长(λmean)与最短波长(λmean)的关系是

A.λmean=3λmin

B.λmean=5λmin

C.λmean=2λmin

D.λmean=5λmin

E.λmean=λmin

The term "moderate speed" was previously interpreted（解释） as meaning a speed which would enable a vessel ______within half the range of visibility.

A.stopping

B.being stopped

C.to stop

D.to be stopped

A mean sun is used as the reference for solar time for three reasons. Which reason is NOT a cause for use of a mean sun?

A.The motion of the apparent sun is along the ecliptic

B.Measurement of time is along the celestial equator

C.The speed of the Earth's revolution is not constant

D.There are variations in the Earth's rotational speed