浸入式电导池直接浸没在被测介质中,或通过()紧固在工艺设备上。
A、螺纹接头
B、法兰盘
C、焊接
D、活接头
参考答案:D
—I'm sorry to keep you waiting.
—Oh, not at all. I ______ here for only a few minutes. [ ]
A. was
B. have been
C. will be
D. am
阴茎癌淋巴转移的首先部位是()
A.腹股沟淋巴结
B.髂血管周围淋巴结
C.盆腔淋巴结
D.主动脉旁区淋巴结
E.锁骨上淋巴结