Study the words in the box and choose the right words in blank.
container
inexpensive
relax
dormitory
1. _ your muscles before starting to run.
2. _ buildings might house a small number of students or many hundreds.
3. It is a relatively _ and renewable material that's readily available.
4. A _ is a very large metal box used for transporting goods.
Well, Ive got to run. —_A. I'm pleased to meet you.B. Yes, you can leave if you
[单选题]B．efore starting the engine, the air bottle should be ____.A．pumped upB．loadedC．dischargedD．closed
[单选题]Before hydraulic starting of an engine on a covered lifeboat，what need NOT be checked?（）A . Fuel supply line valveB . Pressure registered on the accumulator gaugeC . Cold-spark voltage readings test lampD . Engine stop control
[单选题]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.A . open the bypass lineB . cut in the lube oil coolerC . pressurize the lube oil systemD . top off the expansion tank
[单选题]Before starting the engine the air bottle should be （）.A . pumped upB . loadedC . dischargedD . opened
[单选题]Before starting the turning gear, （） should be worked by hand to minimize corrosive action on the liners.A . the indicatorsB . the starting valvesC . the cylinder lubricatorsD . the turning gear
[单选题]2． She hardly ever has time to relax，_______ ?A． does sheB． hasn’t sheC． doesn’t sheD． has she
[单选题]Before starting any diesel or gasoline engine，which of the following must be checked? （）A . Oil levelB . Flow of cooling waterC . Exhaust dischargeD . All of the above
(B)1. (C)2.3.给出以下4个命题①若$\lim_{x\to+\infty}f(x)=a$，则$\lim_{n\to\infty}f(n)=a$.②若$