更多"The point （） water boils is called "的相关试题:
[单项选择]The point（）water boils is called boiling point.
A. when
B. that
C. at which
D. for
[单项选择]The boiling water in the kettle decreases because it ______ into vapor. In other words, it is vaporizing or evaporating.
A. is being converted
B. is converted
C. has been converted
D. converts
[单项选择]Liquid water changes to vapor, __ is called evap
A. which
B. what
C. that
[单项选择]When a liquid boils,it becomes a gas.
A. vapor
B. danger
C. fuel
D. bubble
[单项选择]The liquid boils only when ______.
A. the temperature is raised
B. the bubbles of vapor form below the surface
C. the temperature of the liquid is raised enough
D. the temperature of the liquid is near 100 Celsius
[单项选择]My task boils down to industrial ______ and trouble shooting.
A. contact
B. intimacy
C. liaison
D. involvement
[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]In the WAN, when a point-to-point subnet is used, an important design issue is the router interconnection
A. technology
B. computer
C. service
D. lines
[单项选择]有如下类定义： class Point{ int x_，y_； public： Point( )：x_(0)，y_(0){} Point(int x，int y=0)：x_(x)，y_(y){} }； 若执行语句： Point a(2)，b[3]，*c[4]； 则Point类的构造函数被调用的次数是
A. 2次
B. 3次
C. 4次
D. 5次
[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
