管道施工受到（）、（）条件的影响较大，特别是对露天作业施工影响更大。
参考答案：季节、气候
To play better, all the players have to know their ___________ and weaknesses.
A．techniques
B．strengths
C．benefits
D．values
黑色素瘤肾上腺转移的信号特征是
A．长T1长T2B．短T1短T2C．长T1短T2D．短T1长T2E．等T1等T2
