试述数据库技术的发展过程。数据库技术发展的特点是什么？

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如果冬季涂料施工时涂料不易干，应多加一些催干剂。

THE ANCHOR WAS HEAVED AWEIGH means ______.A.The anchor was weightedB.The anchor was let go

A schooner is a fore－and－aft rigged vessel with ______.A.a single mastB.two masts: with th

On my last voyage it ______ at the discharging port that some watches were pilfered．A.happ

SINGLE UP FORWARD TO HEAD LINE AND SPRING means ______.A.let go all the lines forward incl

钢丝绳的特点是强度大、比重大、弹性差、耐水性好。

A schooner is a fore－and－aft rigged vessel with ______.A.a single mastB.two masts: with th

The pilot {disembarked} our ship yesterday．A.cameB.leftC.dischargedD.visited

6×37的钢丝绳比6×24的钢丝绳要软。

缆绳经插结后，其强度应作为原强度的80%估算。

LOADING SITUATION OF SUB VSL SO FAR SATISFACTORY. AS PER PORT GENERAL ARRANGEMENT SHE WILL

A seaman is entitled by law to a release from Foreign Articles when ______.A.intoxicatedB.

6×37的钢丝绳比6×24的钢丝绳要软。

A semisubmersible which flops between forward and aft angles of trim is likely to have ___

A safety feature provided on all inflatable liferafts is ______.A.overhead safety strapsB.

盐、油类、粮食不属散装货物。

In telex abbreviations，CFM and INFM refer to ______ and ______ respectively．A.confirm，info

Please kindly arrange for shore workers to do ______ during loading the heavy cargo on dec

A seaman is entitled by law to a release from Foreign Articles when ______.A.intoxicatedB.

A seaman is entitled by law to a release from Foreign Articles when ______.A.intoxicatedB.

I’m extremely sorry for ______ you an early reply．A.not to giveB.not to have givenC.not ha

A seaman may have all or part of his wages deposited by allotment to a bank or savings ins

______ the way from Shanghai to Japan，the ship encountered heavy weather．A.OnB.AtC.DuringD

A sail hook is used for ______.A.hoisting a windsailB.parcelingC.sewing canvasD.testing ca

使用较久的钢丝绳应调头使用，以延长钢丝绳的使用寿命。

______ is not a proper office at which a note of sea protest should be filed.A.ConsulB.Not

A safety feature provided on all inflatable liferafts is ______.A.overhead safety strapsB.

抛锚时，当看到一个红色链环且其前后各有一个白色有档链环时，则出链长度为三节。

A declaration made by the Master before a PRC Consul，giving particulars regarding heavy we

A semisubmersible with a negative GM flops to an angle of ______.A.heelB.trimC.listD.loll

如果冬季涂料施工时涂料不易干，应多加一些催干剂。

A seaman is entitled by law to a release from Foreign Articles when ______.A.intoxicatedB.

A seaman is entitled by law to a release from Foreign Articles when ______.A.intoxicatedB.

I’m {disabled}，communicate with me．A.in good orderB.having no capacityC.out of controlD.un

I’m manoeuvring ______ difficulty．Please keep well clear ______ me．A.with，ofB.in，ofC.at，ap