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【单选题】
设有一个命令按钮,若要实现按回车键等同按此键,应设置其_________ 。
A.
Cancel属性设为True
B.
Cancel属性设为False
C.
Default属性设为True
D.
Default属性设为False
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举一反三
【单选题】I'll call you tonight at 10 o'clock ______ I can find a telephone that works.
A.
unless
B.
suppose
C.
provided
D.
when
查看完整题目与答案
【单选题】短周期元素A、B、C、D在周期表中的位置如图所示，若A的原子序数为a、最外层电子数为n，则下列关系式或说法错误的是（　　） A B C D
A.
四种元素的原子序数之和Z=4a+16
B.
四种元素的原子序数之和Z≤50
C.
四种元素的最外层电子数之和E=4n+2
D.
四种元素的最外层电子数之和E≤30
查看完整题目与答案
【单选题】保全平台归档中，起止日期对应是指()。
A.
生效日期
B.
作业日期
C.
受理日期
D.
批改日期
查看完整题目与答案
【判断题】天然气和空气混合，当天然气浓度在一定范围内时，遇明火就会发生燃烧和爆炸。燃烧时，燃烧波的传播速度较慢，约0.3～2.4m/s，而爆炸时，会迅即产生高压高温，波速达到1000～3000m/s，对管线和容器的破坏力很大。天然气产生爆炸的浓度范围为5～15％，随温度、压力升高，爆炸浓度的上限提高，爆炸范围扩大。Natural gas and air mix, when the concentration...
A.
正确
B.
错误
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【单选题】I'll call you as soon as I _there. [     ]
A.
will get
B.
have got
C.
get
D.
got
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【单选题】One of the most hazardous conditions a fire- fighter will ever encounter is a backdraft (also known as a smoke explosion). A backdraft can occur in the hot-smoldering phase of a fire when burning is i...
A.
has more oxygen available for combustion.
B.
has more carbon dioxide available for consumption.
C.
produces more dense gray smoke.
D.
is more likely to cause a backdraft.
查看完整题目与答案
【判断题】menu是一个常量
A.
正确
B.
错误
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【简答题】Fuel gases are very combustible and can easily explode. Explosions can occur when a gas leaks from its container and reaches an ignition source, such as an open flame or spark. In the United States, m...
查看完整题目与答案
【单选题】A: 'Bye, darling. Have a good trip. I'll miss you. B: I'll miss you, too. I'll call you every day.
A.
public space
B.
social space
C.
personal space
D.
intimate space
查看完整题目与答案
【单选题】听力原文：W: How long will it take you to fix my watch? M: I'll call you when it's ready. But it shouldn't take longer than a week. What is the probable relationship between the two speakers?
A.
Librarian and student.
B.
Operator and caller.
C.
Boss and secretary.
D.
Customer and repairman.
查看完整题目与答案
相关题目：
【单选题】I'll call you tonight at 10 o'clock ______ I can find a telephone that works.
A.
unless
B.
suppose
C.
provided
D.
when
查看完整题目与答案
【单选题】短周期元素A、B、C、D在周期表中的位置如图所示，若A的原子序数为a、最外层电子数为n，则下列关系式或说法错误的是（　　） A B C D
A.
四种元素的原子序数之和Z=4a+16
B.
四种元素的原子序数之和Z≤50
C.
四种元素的最外层电子数之和E=4n+2
D.
四种元素的最外层电子数之和E≤30
查看完整题目与答案
【单选题】保全平台归档中，起止日期对应是指()。
A.
生效日期
B.
作业日期
C.
受理日期
D.
批改日期
查看完整题目与答案
【判断题】天然气和空气混合，当天然气浓度在一定范围内时，遇明火就会发生燃烧和爆炸。燃烧时，燃烧波的传播速度较慢，约0.3～2.4m/s，而爆炸时，会迅即产生高压高温，波速达到1000～3000m/s，对管线和容器的破坏力很大。天然气产生爆炸的浓度范围为5～15％，随温度、压力升高，爆炸浓度的上限提高，爆炸范围扩大。Natural gas and air mix, when the concentration...
A.
正确
B.
错误
查看完整题目与答案
【单选题】I'll call you as soon as I _there. [     ]
A.
will get
B.
have got
C.
get
D.
got
查看完整题目与答案
【单选题】One of the most hazardous conditions a fire- fighter will ever encounter is a backdraft (also known as a smoke explosion). A backdraft can occur in the hot-smoldering phase of a fire when burning is i...
A.
has more oxygen available for combustion.
B.
has more carbon dioxide available for consumption.
C.
produces more dense gray smoke.
D.
is more likely to cause a backdraft.
查看完整题目与答案
【判断题】menu是一个常量
A.
正确
B.
错误
查看完整题目与答案
【简答题】Fuel gases are very combustible and can easily explode. Explosions can occur when a gas leaks from its container and reaches an ignition source, such as an open flame or spark. In the United States, m...
查看完整题目与答案
【单选题】A: 'Bye, darling. Have a good trip. I'll miss you. B: I'll miss you, too. I'll call you every day.
A.
public space
B.
social space
C.
personal space
D.
intimate space
查看完整题目与答案
【单选题】听力原文：W: How long will it take you to fix my watch? M: I'll call you when it's ready. But it shouldn't take longer than a week. What is the probable relationship between the two speakers?
A.
Librarian and student.
B.
Operator and caller.
C.
Boss and secretary.
D.
Customer and repairman.
查看完整题目与答案