更多"Pitted reduction gear teeth having "的相关试题:
[单项选择]对于表A（col1 int，col2 char（1））更新col1=1的数据col2值为N，下面语句正确的是（）
A. update table A setcol2=’N’ where col1=1
B. modify table A setcol2=N where col1=1
C. update A set col2=’N’ where col1=1
D. modify A set col2=N where col1=1
[单项选择]对于表A（col1 int，col2 char（1）），表B（col1 int，col2char（1）），为确保表A的数据全部被保留，下面正确的联接方式是（）
A. A inner join B
B. A left join B
C. A right join B
D. Across join B
[单项选择]I saw your man not operating the winch gear（）gear.
A. in
B. by
C. of
D. against
[单项选择]Chafing gear（）.
A. reduces and prevents corrosion of standing rigging
B. prevents corrosion of running rigging
C. reduces and prevents wear caused by the rubbing of one object against another
D. protects the body against extreme cold
[单项选择]Advise（）your fishing gear．
A. you recovery
B. you recover
C. you recovering
D. you recovered
[单项选择]Vessel shall possess International Cargo Gear Certificates （） duration of Charter Party showing winches and derricks in order.
A. validity in
B. valid for
C. effective at
D. effectiveness for
[单项选择]英语tooth→teeth采用的语法手段是（）。
A. 加词尾
B. 加词缀
C. 变换重音的位置
D. 词根内部音素的变化
[单项选择]Lighted white and orange buoys must show which color light?（）
A. Orange
B. White
C. Red
D. Alternating yellow and white
[单项选择]You are heading towards（）gear.
A. fish
B. fishing
C. fisher
D. fishery
[单项选择]Chafing gear is used to（）.
A. anchor the boat
B. pick up heavy loads
C. protect fiber rope from abrasion
D. strengthen mooring lines
[单项选择]Chafing gear is normally used（）.
A. for portable fenders
B. for ground tackle
C. on the inside of the hawsepipe
D. on mooring lines
[单项选择]During steering gear test should be moved through its full travel in both directions（）
A. pump
B. the cylinder
C. the hunting gear
D. the rudder
[单项选择]Positive displacement, helical gear pumps are well suited for pumping oil because （）
A. stuffing boxes eliminate the leakage problems usually associated with other gear pumps
B. it is not necessary to closely maintain design clearances with this pump
C. they are essentially self-priming and produce a high suction lift
D. these pumps are designed with extreme tooth angled
[单项选择]Chafing gear should be placed（）.
A. at all wearing points of mooring lines
B. at the bitter ends of all standing rigging
C. around running rigging
D. on wire rope only
[单项选择]Gear oil的中文含义是（）。
A. 齿轮泵
B. 齿轮比
C. 齿轮油
D. 齿轮组
