有延迟裂纹倾向的承压容器材料在焊接完成()小时后，进行无损检测。
A. 8
B. 12
C. 24
D. 30
A．People can call you hack if necessary.B．You can dial a special number free.C．You don
A. People can call you hack if necessary.
B. You can dial a special number free.
C. You don't need to pay for long distance call.
D. You can get a credit coupon when you give the phone number.
A．gotB．passedC．obtainedD．derived
A. got
B. passed
C. obtained
D. derived
某工程由3个施工过程组成，分为4个施工段进行流水施工，其流水节拍见下表，流水步距为()。
A. KⅠ,Ⅱ=6，KⅡ,Ⅲ=4
B. KⅠ,Ⅱ=4，KⅡ,Ⅲ=4
C. KⅠ,Ⅱ=6，KⅡ,Ⅲ=10
D. KⅠ,Ⅱ=11，KⅡ,Ⅲ=10
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