自防水混凝土的抗渗能力应不低于()。A.0.4MPa B.0.5MPa C.0.6M

题型:单项选择题

问题:

自防水混凝土的抗渗能力应不低于()。

A.0.4MPa

B.0.5MPa

C.0.6MPa

D.0.8MPa

考点:矿业工程矿业工程题库
题型:单项选择题

按照课文内容填空(共10小题; 每小题0.5分,满分5分)

阅读下面的短文,在标有序号的空白处填入一个适当的词,或用括号中动词的适当形式填空。

At first my new surroundings were difficult to 1________. The air seemed thin, as though its combination of gases had little oxygen left. 2._________ by a lack of fresh air, my head ached. Just as I tried to make the necessary 3.____________ to this new situation, Wang Ping appeared. "4.__________on this mask," he advised. "It’ll make you feel much better." He handed it to me and immediately hurried me through to a small room nearby for a rest. I felt better in no time. Soon I was back on my 5________ again and following him to collect a hovering carriage driven by computer. These carriages float above the ground and by bending or 6._________ (press) down in your seat, you can move swiftly. Wang Ping fastened my safety belt and showed me how to use it. Soon I could fly as fast as him.7.___________, I lost sight of Wang Ping when we reached 8.___________looked like a large market because of too many carriages flying by in all 9_________________. He was swept up into the centre of them. Just at that moment I had a "time lag" flashback and saw the area again as it had been in the year AD 2008. I realized that I had 10_________________ (transport) into the future of what was still my hometown! Then I caught sight of Wang Ping again and flew after him.

题型:单项选择题

各种运算符间的优先顺序从高到低是

A.比较运算符→算术运算符→逻辑运算符

B.比较运算符→逻辑运算符→算术运算符

C.算术运算符→比较运算符→逻辑运算符

D.算术运算符→逻辑运算符→比较运算符

题型:单项选择题

不属于颈内动脉分支的是()

A.泪腺动脉

B.额动脉

C.鼻梁动脉

D.眶上动脉

E.眶下动脉

题型:单项选择题

被称为古希腊悲剧之父的作家是______.

A.埃斯库罗斯

B.索福克勒斯

C.欧里庇得斯

D.阿里斯托芬

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