当工作负荷为()MPa时,选用高粘度润滑油。
A.<10
B.10~100
C.100~200
D.>200
参考答案:A
We are sure that scientists will ______ a way to solve the difficult problem.
A. put upB. come up withC. look upD. come up
胃癌淋巴结转移可以超越常规的淋巴结转移方式而直接侵犯远处淋巴结,最常见的为()
A.胰脾淋巴结
B.肝门淋巴结
C.腹腔淋巴结
D.左锁骨上淋巴结
E.腹主动脉旁淋巴结