She is hungry. She wants _____ some water. [ ]
A. eat
B. to eat
C. drink
D. to drink
答案:D
大型混凝土设备基础,一般还具有()的特点。
A.造型复杂
B.埋设铁件种类多,数量大
C.尺度大
D.施工精度要求高
E.挖掘深度深
电力变压器检修周期原则上如何规定?