更多"Boil drinking water for at least fi"的相关试题:
[单项选择]Many teakettles whistle when the （）starts to boil.
A. containing water inside
B. water contained inside
C. water containing inside
D. contain water
[单项选择]The square itself is five hundred yards wide, five times ______ the size of St. Peter's in Rome.
A. /
B. that of
C. which is
D. of
[单项选择]Once there is a threat to our water supply water can quickly become the only that matters．
A. 只要水源受到威胁，水很快就会变成惟一重要的物质。
B. 供水一度出现危机，所以水很快就成了惟一紧缺的物质。
C. 供水一旦受到威胁，水很快就会成为惟一至关重要的问题。
D. 有一次水源曾遭受污染，水成了人们惟一不能很快解决的问题。
[单项选择]What does "it" of "since water-vapor becomes water when it cools" in Para. 3. refer to
A. Water-vapor.
B. Water.
C. Cloud.
D. Air.
[单项选择]Dirty water must not be ______ with drinking water.
A. joined
B. linked
C. mixed
D. combined
[单项选择]The committee comprises five persons.
A. absorbs
B. concerns
C. excludes
D. involves
[单项选择]Five people attended the meeting.
[单项选择]Jeff here five minutes ago.
[单项选择]DEHYDRATE: WATER::
A. (A) infiltrate : insecurity
B. (B) wither : vitality
C. (C) ossify : strength
D. (D) desecrate : piety
E. (E) contaminate : viability
[单项选择]Which of the following least accurately describes a component of aggregate demand（）
A. Consumption.
B. Net imports.
C. Investment.
[单项选择]Which transaction would least likely be classified as an interest rate swap（ ）
A. Pay USD fixed, receive U. S. LIBOR.
B. Receive AUD fixed, pay NZD floating.
C. Receive U. S. fixed, pay U.S. commercial paper.
[单项选择]Which of the following statements least accurately describes why firms can coordinate economic activity more efficiently than markets Firms can achieve:（）
A. economies of scope.
B. diversification benefits.
C. economies of scale.
