在曲线半径为351～450ｍ作业时，采用四点式作业法一次最大拨道量为（）mm。
参考答案：60
胰岛素分泌（）
A.以体液调节为主
B.以神经调节为主
C.以代谢物反馈调节为主
D.受靶腺激素与下丘脑调节肽双重调控
E.以上都不对
— I will come to attend your lecture at 10:00 tomorrow.
— I’m sorry, by then my lecture will have ended and I _____ in my office.
A．is being worked
B．will work
C．will be working
D．will have worked
