If anybody calls, tell them I’m out, and ask them to _______ their name and address.

A．pass

B．write

C．take

D．Leave

滑模系统中支承杆的说法正确的有（）

A、承受滑升模板的全部施工荷载

B、将承受荷载传递至下部混凝土

C、整个装置上滑时的导轨

D、加固模板