【单选题】______is the largest single employer of labor in the U. K.
A.
The central government
B.
The National Health Service
【单选题】预应力钢筋的张拉控制应力δCon是指 。
C.
张拉预应力钢筋时,张拉机其所指示的总张拉力除以预应力钢筋面积的值
【单选题】操作系统中,下面“不合法”的文件名是()
【单选题】In order to release CO2 to the machinery spaces from a fixed fire extinguishing system, you must_____.
A.
actuate an alarm and open the engine room control valve
B.
actuate an alarm and open the engine room CO2 releasing valve
C.
open the engine room control valve and shut off engine room ventilation fans
D.
open the engine room control valve and then the CO2 releasing valve
【判断题】超张拉是指张拉值超过预应力钢筋的张拉控制应力值,而不是指张拉控制应力值超过预应力钢筋的强度标准值。
【单选题】预应力钢筋的张拉控制应力 是指( )。
C.
预应力钢筋在进行张拉时,张拉设备(千斤顶油压表)所指示的总张拉力除以预应力钢筋截面面积而得到的应力值。
【单选题】It was ____ exciting news that more than ten students in a single school were admitted to Tsinghua University in the same year. [ ]
【单选题】Hip replacement surgery is______joint replacement surgery in the U. S.
A.
the single most frequent
B.
the most single frequent