混凝土梁裂缝加固技术,表抹灰温度较高时,涂抹()h后即需洒水养生,并防止阳光直射。
A.1-2
B.2-3
C.2-4
D.3-4
参考答案:D
The old man _____ chess but now he doesn’t enjoy it.
A.used to play
B.used to playing
C.was used to play
D.was used to playing
低血糖是在吃饱情况下,从事长跑、长距离自行车等运动出现的症状。