采煤方法分为()、()两大类。

题型:填空题

问题:

采煤方法分为()、()两大类。

考点:土木建筑工程钻井工程钻井工程题库
题型:填空题

During our two months on the road, Bennett and I had a really (1) experience with a good, honest (2) and some helpful mechanics.

We were driving east on Highway 10 when our "chick engine" light came on. We limped of a(n) (3) into Las Cruces. We had a real car (4) Bennett nursed the ear into a local garage. By this time the car was missing so (5) it was shaking all over. This was the (6) time to arrive at a garage—late Friday afternoon. Service adviser Scott was busy (7) paper work and customers as we (8) our problems. (9) he was already "ten cars behind", he told us to pull the car into the garage.

Lincoln, who we later (10) was one of the two motor technicians, took (11) of our car repairing. He and Scott and some other mechanics stayed several hours after closing, (12) the car.

Early the next morning (the shop was officially closed on Saturdays), Lincoln finally located the (13) and fixed it easily within only (14)

Later Scott (15) out to us that it was our attitude that helped. "You didn’t come into the place demanding this or that. You showed an (16) of our problems on a busy Friday afternoon. Customer’s attitude means a lot. " He was right in some way, customers should show (17) and understanding to people who (18) them. (19) people were extremely busy, they found way to at least try and help when they are met with politeness.

The pleasant experience I had shows that (20) for other people can always help.

6().

A.highest 

B.easiest 

C.luckiest 

D.worst

题型:填空题

在图所示的电路中,电阻R1=4Ω,R2=2Ω,电源电压保持不变.当开关S1、S3断开,S2闭合时,电流表的示数为0.5A;当开关S1、S3闭合,S2断开时,电流表的示数为 ______A.

题型:填空题

果园摘下175吨苹果,一辆汽车一天能运12次,每次能运15吨.摘下的苹果用这辆汽车一天能运完吗?

题型:填空题

七情内伤,致病后易引起脾气郁结的因素是()。

A.过喜

B.过怒

C.过思

D.过悲

E.过恐

题型:填空题

关于弗留盖尔简化公式说法错误的是( )

A.级组前、后蒸汽参数与流量的关系式是分析机组变工况特性的基础
B.根据汽轮机进汽量的变化,可以测算各抽汽点的压力变化
C.可以利用调节级后蒸汽压力作为测量蒸汽流量的信号或机组功率的信号
D.可以利用抽汽点温度变化监视通流部分损坏或结垢程度

更多题库