合资企业的安全生产投入资金应由（）予以保证。
A.董事会
B.厂长
C.经理
D.投资者
参考答案：A
The result is not the same _____ they had expected, _____ was rather disappointing.
A．which; as
B．as; that
C．that; which
D．as; which
信息系统的维护包括硬件维护、软件维护、网络维护和______维护。
