首页
登录
职称英语
Today, most countries in the world have canals. Some canals, such as the Sue
Today, most countries in the world have canals. Some canals, such as the Sue
游客
2024-09-24
7
管理
问题
Today, most countries in the world have canals. Some canals, such as the Suez or the Panama,【C1】______ships weeks of time by making their voyage a thousand miles shorter. Other canals permit boats to reach cities that are not located on the coast.【C2】______other canals drain lands where there is too much water, help or【C3】______fields where there is not enough water.
The【C4】______of a canal depends on the kind of boats going through it. The canal must be wide enough to permit two of the【C5】______boats using it to【C6】______each other easily. It must be deep enough to leave about two feet of water【C7】______the keel of the largest boat using the canal. Some canals have sloping sides, while others have sides that are nearly【C8】______. Canals that are cut through rock can have nearly vertical sides. 【C9】______, canals with earth banks may【C10】______if the angle of their sides is too steep. Some canals are lined with brick, stone, or concrete to keep the water【C11】______soaking into the mud. This also permits ships to go at【C12】______speeds, since they cannot make the banks fall in by【C13】______up the water. In small canals with mud banks, ships and barges(大平底船)must【C14】______their speed.
When the canal goes【C15】______different levels of water, the ships must be【C16】______or lowered from one level to the other. This is generally done by【C17】______of locks. If a ship wants to go up to higher water, the lower end of the lock opens to let the boat in. Then this gate closes, and the water is let into the lock chamber from the upper level. This raised the level of the water in the lock【C18】______it is the same as the upper level of water. Now the upper gates can be opened to【C19】______the ship into the higher water. Sometimes a canal contains a series of locks when the【C20】______in levels is very great. [br] 【C13】
选项
A、revolving
B、stirring
C、mixing
D、rotating
答案
B
解析
因为河堤很坚固,所以船行驶时激起的水才不会将河堤冲垮,故答案为[B]stirring“激起”。[A]revolving“旋转”和[D]rotating“轮流”都不能与up搭配;[C]mixing可以与up搭配,但mix up表示“搅匀,混淆”,与语义不符。
转载请注明原文地址:https://tihaiku.com/zcyy/3771539.html
相关试题推荐
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
Today,mostcountriesintheworldhavecanals.Somecanals,suchastheSue
随机试题
A.≤l B.≤1.5 C.≤2 D.≤2.5
关于肝细胞性黄疸下列错误的A.血胆红素增加 B.粪胆原下降或正常 C.尿中尿
关于贷款展期的担保问题,下列说法错误的是()A.对于保证贷款的展期,银行应重
男性患者,21岁。昨夜会餐,5小时后开始出现恶心,呕吐胃内容物,伴腹痛、腹泻。查
患者,男,患有慢性胃炎,大便溏,近日因腹痛就诊,自诉不欲饮食,口不渴,诊其苔白滑
对公司盈利能力和公司成长性分析需要分析()。 Ⅰ.公司盈利预测 Ⅱ.
(2016年真题)下列关于主动投资的说法,错误的是()。A.在非完全有效的
要成巨富,还须“争时”,放远眼光,走在别人前面;当然,仅有眼光是不够的,作为一个
依法负责期货从业人员资格的认定,管理及撤销的机构是()。A.中国期货业协会
男性,42岁,近一个月来在刷牙时常出现右上牙部及右面部疼痛,每次持续5~6秒钟,
最新回复
(
0
)