While reviewing cluster logs， and administrator notice that an event， network_down rs232a， occurred on the previous day. After verifying the physical network connections and device states， what command can be used to verify the cluster state？（）
第1题：
A.while(x<=7)
B.while(x=7)
C.while(x<7)
D.while(x!=7)
第2题：
与以下程序段等价的是( ) while (a) { if (b) continue； C； }
A．while(a)
B．while(c) {if(!b) c;) {if(!b)break: c:)
C．while?
D．while(a) {if(b) c:) {if(b) break: c；}
第3题：
The major difference between project and line management is that the project manager may not have any control over which basic management function?
A . Decision-making
B . Staffing
C . Rewarding
D . Tracking/monitoring
E . Reviewing
第4题：
第5题：
The students expected there ________ more reviewing classes before the final exam.
[A] is
[B] being
[C] have been
[D] to be
第6题：
While reviewing the MySQL error log, you see occasions where MySQL has exceeded the number of file handles allowed to it by the operating system.Which method will reduce the number of file handles in use?（）
A.Activating the MySQL Enterprise thread pool plugin
B.Relocating your data and log files to separate storage devices
C.Disconnecting idle localhost client sessions
D.Implementing storage engine data compression options
第7题：
下列写法中等价的是( )。
A．若x=1,while(x!=x)与while(x)
B．若x=0,while(x!=x)与while(x)
C．若x=1,while(x!=0)与while(!x)
D．若x=0,while(x==0)与while(x)
第8题：
The students expected there _________more reviewing classes before the final exams．
A．is
B．being
C．are
D．to be
第9题：
The idea for the new project came to Jack ______ to his study recently.
A. while devoting
B. while devoting himself
C. while he was devoted
D. while devoted
第10题：